{"id":2298,"date":"2023-06-09T18:41:28","date_gmt":"2023-06-09T13:11:28","guid":{"rendered":"https:\/\/nayantelrandhe.com\/?page_id=2298"},"modified":"2023-06-10T13:11:36","modified_gmt":"2023-06-10T07:41:36","slug":"old-days","status":"publish","type":"page","link":"https:\/\/nayantelrandhe.com\/index.php\/old-days\/","title":{"rendered":"Old Days"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2298\" class=\"elementor elementor-2298\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4e0ce09 elementor-section-height-min-height elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"4e0ce09\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-61ea439\" data-id=\"61ea439\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d638d84 elementor-widget__width-initial elementor-widget-mobile__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"d638d84\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>\u201cThe scientist does not study nature because it is useful to do so. He studies it because he takes pleasure in it, and he takes pleasure in it because it is beautiful. If nature were not beautiful it would not be worth knowing, and life would not be worth living.\u201d<\/strong><\/p><p>\u00a0<\/p><p>Henri Poincar\u00e9, Science and Method<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bd24b6d elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bd24b6d\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-273292e\" data-id=\"273292e\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-46c0178 elementor-widget elementor-widget-spacer\" data-id=\"46c0178\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fcea22c elementor-section-height-full elementor-section-boxed elementor-section-height-default elementor-section-items-middle\" data-id=\"fcea22c\" data-element_type=\"section\" id=\"#solar\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-af2c5fb\" data-id=\"af2c5fb\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1bba429 elementor-widget elementor-widget-spacer\" data-id=\"1bba429\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7e348b9 elementor-widget elementor-widget-heading\" data-id=\"7e348b9\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Solar Spectrum<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-9a55d5c elementor-widget elementor-widget-image\" data-id=\"9a55d5c\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-1024x683.jpg\" class=\"attachment-large size-large wp-image-2347\" alt=\"\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-1024x683.jpg 1024w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-300x200.jpg 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-768x512.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-1536x1024.jpg 1536w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_52142-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d09b968 elementor-widget elementor-widget-text-editor\" data-id=\"d09b968\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>The spectrum was obtained with a 100 lines\/mm transmission grating, a DSLR, a needle. The sunlight when reflected off the needle forms a thin slit like image which when passed from a transmission grating leads to different order spectrums as visible in image. The background noise is due to surrounding which can be bettered.<\/li><li>The absorption lines are visible in the photo, the diffracted image can be calibrated using different known absorption lines and zeroth order image. <a href=\"https:\/\/www.rspec-astro.com\/setupdownload\/\" target=\"_blank\" rel=\"noopener\">RSpec<\/a> was used.\u00a0<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-f24596f\" data-id=\"f24596f\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-90b7332 elementor-widget elementor-widget-spacer\" data-id=\"90b7332\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a1f77dc elementor-widget elementor-widget-heading\" data-id=\"a1f77dc\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">.<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-aec6d2b elementor-widget elementor-widget-image-gallery\" data-id=\"aec6d2b\" data-element_type=\"widget\" data-widget_type=\"image-gallery.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-gallery\">\n\t\t\t<div id='gallery-1' class='gallery galleryid-2298 gallery-columns-2 gallery-size-medium_large'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"aec6d2b\" data-elementor-lightbox-description=\"Identified Fraunhofer absorption lines\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjM0MiwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcL3N1bmdmcmF1bi5wbmciLCJzbGlkZXNob3ciOiJhZWM2ZDJiIn0%3D\" href='https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sungfraun.png'><img decoding=\"async\" width=\"768\" height=\"402\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sungfraun-768x402.png\" class=\"attachment-medium_large size-medium_large\" alt=\"\" aria-describedby=\"gallery-1-2342\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sungfraun-768x402.png 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sungfraun-300x157.png 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sungfraun.png 841w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2342'>\n\t\t\t\tIdentified Fraunhofer absorption lines\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"aec6d2b\" data-elementor-lightbox-description=\"Screenshot from the Rspec interface\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjMzOSwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcLzIwMjAtMDctMjMtMTJfMDFfMjYtUlNwZWMtQ19fVXNlcnNfU09OWV9Eb2N1bWVudHNfUlNwZWNfQ2FwdHVyZV9Dcm9wX0lNR181MjE0LWNyb3BwZWQuYm1wLVRyaWEucG5nIiwic2xpZGVzaG93IjoiYWVjNmQyYiJ9\" href='https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria.png'><img decoding=\"async\" width=\"768\" height=\"450\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria-768x450.png\" class=\"attachment-medium_large size-medium_large\" alt=\"\" aria-describedby=\"gallery-1-2339\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria-768x450.png 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria-300x176.png 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria-1024x600.png 1024w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/2020-07-23-12_01_26-RSpec-C__Users_SONY_Documents_RSpec_Capture_Crop_IMG_5214-cropped.bmp-Tria.png 1296w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2339'>\n\t\t\t\tScreenshot from the Rspec interface\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"aec6d2b\" data-elementor-lightbox-description=\"The spectrum can be further reduced to obtain the characteristic profile spectrum of Sun shown in blue from software library\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjM0NCwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcL3N1bi10Mi5qcGciLCJzbGlkZXNob3ciOiJhZWM2ZDJiIn0%3D\" href='https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sun-t2.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"392\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sun-t2-768x392.jpg\" class=\"attachment-medium_large size-medium_large\" alt=\"\" aria-describedby=\"gallery-1-2344\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sun-t2-768x392.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sun-t2-300x153.jpg 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/sun-t2.jpg 869w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-1-2344'>\n\t\t\t\tThe spectrum can be further reduced to obtain the characteristic profile spectrum of Sun shown in blue from software library\n\t\t\t\t<\/figcaption><\/figure>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2eb5884 elementor-widget elementor-widget-text-editor\" data-id=\"2eb5884\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<ul><li>A type stars have prominent absorption lines which can be used for calibration thus they are recommended as a first target.<\/li><li>I had obtained data from Sirius (A type)\u00a0 as well as of Betelegeuse (a red supergiant with some prominent emission lines). I will try to add them to the page whenever possible.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-a158608 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a158608\" data-element_type=\"section\" id=\"#spot\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-d95f307\" data-id=\"d95f307\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a747cb elementor-widget elementor-widget-spacer\" data-id=\"6a747cb\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1ec1726 elementor-widget elementor-widget-heading\" data-id=\"1ec1726\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Arago\/Poisson\/Fresnel Spot<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-745e284 elementor-widget elementor-widget-video\" data-id=\"745e284\" data-element_type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/new3.mp4\" controls=\"\" preload=\"metadata\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-f997c33\" data-id=\"f997c33\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-d2be46b elementor-widget elementor-widget-spacer\" data-id=\"d2be46b\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-a847aef elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"a847aef\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-69a9fbc\" data-id=\"69a9fbc\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-180509b elementor-widget elementor-widget-video\" data-id=\"180509b\" data-element_type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/5250.mp4\" controls=\"\" preload=\"metadata\" controlsList=\"nodownload\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-206ff8e elementor-widget elementor-widget-image\" data-id=\"206ff8e\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-scaled.jpg\" data-elementor-open-lightbox=\"yes\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjMwMiwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcL0lNR181MjQ2LXNjYWxlZC5qcGcifQ%3D%3D\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-1024x683.jpg\" class=\"attachment-large size-large wp-image-2302\" alt=\"\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-1024x683.jpg 1024w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-300x200.jpg 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-768x512.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-1536x1024.jpg 1536w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_5246-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-4e81cca\" data-id=\"4e81cca\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2439e3b elementor-widget elementor-widget-text-editor\" data-id=\"2439e3b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>In 2016 Veritasium uploaded a video<a href=\"https:\/\/www.youtube.com\/watch?v=y9c8oZ49pFc\" target=\"_blank\" rel=\"noopener\"> <span style=\"text-decoration: underline;\"><strong>&#8220;The Brightest Part of a Shadow is in The Middle&#8221;<\/strong><\/span><strong>\u00a0\u00a0<\/strong><\/a><\/p><p>So I had to investigate.\u00a0<\/p><p>( The laser used is 532nm )<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-6e9ce32 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"6e9ce32\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-80a79a2\" data-id=\"80a79a2\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-22330ae elementor-widget elementor-widget-spacer\" data-id=\"22330ae\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49eb3db elementor-widget elementor-widget-heading\" data-id=\"49eb3db\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sirius changing colours at low altitudes<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d15c704 elementor-widget elementor-widget-video\" data-id=\"d15c704\" data-element_type=\"widget\" data-settings=\"{&quot;video_type&quot;:&quot;hosted&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"e-hosted-video elementor-wrapper elementor-open-inline\">\n\t\t\t\t\t<video class=\"elementor-video\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/phen.mp4\" controls=\"\" preload=\"metadata\" controlsList=\"nodownload\" poster=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/phen-scaled-e1686319121832.jpg\"><\/video>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-top-column elementor-element elementor-element-c167d6c\" data-id=\"c167d6c\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-77219e7 elementor-widget elementor-widget-text-editor\" data-id=\"77219e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Light from stars encounter a larger air mass when rising or at low altitudes (angle above horizon). Air also being turbulent, different colours of the star can be refracted at different angles. This dynamics result in stars twinkling rapidly, also change of colours, compared to ones at higher altitude. Higher air mass also leads to usual reddening that is observed easily with sun.<\/p>\n<p><br><\/p>\n<p><\/p>\n<p>In the video the focus about Sirius is changed which makes the effect visible very well. Followed by a still of focused star moved during long exposure leaving a colourful trail.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-9a1f4f4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"9a1f4f4\" data-element_type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2e8fff5\" data-id=\"2e8fff5\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-6a59b64 elementor-widget elementor-widget-spacer\" data-id=\"6a59b64\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bec71f8 elementor-widget elementor-widget-image-gallery\" data-id=\"bec71f8\" data-element_type=\"widget\" data-widget_type=\"image-gallery.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-gallery\">\n\t\t\t<div id='gallery-2' class='gallery galleryid-2298 gallery-columns-4 gallery-size-large'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"bec71f8\" data-elementor-lightbox-description=\"Lunar Corona\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjM2OCwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcL0lNR18zODMxLXNjYWxlZC5qcGciLCJzbGlkZXNob3ciOiJiZWM3MWY4In0%3D\" href='https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-scaled.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-1024x683.jpg\" class=\"attachment-large size-large\" alt=\"\" aria-describedby=\"gallery-2-2368\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-1024x683.jpg 1024w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-300x200.jpg 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-768x512.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-1536x1024.jpg 1536w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_3831-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-2368'>\n\t\t\t\tLunar Corona\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"bec71f8\" data-elementor-lightbox-description=\"Trying to create standing waves in a Desert Cooler tank\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6MjMwNSwidXJsIjoiaHR0cHM6XC9cL25heWFudGVscmFuZGhlLmNvbVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyM1wvMDZcL0lNR18wNTU5LXNjYWxlZC5qcGciLCJzbGlkZXNob3ciOiJiZWM3MWY4In0%3D\" href='https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-scaled.jpg'><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-1024x683.jpg\" class=\"attachment-large size-large\" alt=\"\" aria-describedby=\"gallery-2-2305\" srcset=\"https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-1024x683.jpg 1024w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-300x200.jpg 300w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-768x512.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-1536x1024.jpg 1536w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_0559-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-2305'>\n\t\t\t\tTrying to create standing waves in a Desert Cooler tank\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a 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https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_1469-768x512.jpg 768w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_1469-1536x1024.jpg 1536w, https:\/\/nayantelrandhe.com\/wp-content\/uploads\/2023\/06\/IMG_1469-2048x1365.jpg 2048w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div>\n\t\t\t\t<figcaption class='wp-caption-text gallery-caption' id='gallery-2-2306'>\n\t\t\t\tDropping water droplet in a container with still water\n\t\t\t\t<\/figcaption><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"bec71f8\" data-elementor-lightbox-description=\"Dropping water droplet in a container with still water\" 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sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-bda12b4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"bda12b4\" data-element_type=\"section\">\n\t\t\t\t\t\t\t<div class=\"elementor-background-overlay\"><\/div>\n\t\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-0729e1a\" data-id=\"0729e1a\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-77fe68f elementor-widget elementor-widget-spacer\" data-id=\"77fe68f\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u201cThe scientist does not study nature because it is useful to do so. He studies it because he takes pleasure in it, and he takes pleasure in it because it is beautiful. If nature were not beautiful it would not be worth knowing, and life would not be worth living.\u201d \u00a0 Henri Poincar\u00e9, Science and [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"no-sidebar","site-content-layout":"page-builder","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-2298","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/pages\/2298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/comments?post=2298"}],"version-history":[{"count":67,"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/pages\/2298\/revisions"}],"predecessor-version":[{"id":2435,"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/pages\/2298\/revisions\/2435"}],"wp:attachment":[{"href":"https:\/\/nayantelrandhe.com\/index.php\/wp-json\/wp\/v2\/media?parent=2298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}