https://padlet.com/ekta5/5iom7rg237imbwn7 Made with wonder en-us 2022-01-06 04:03:33 UTC 2022-01-10 10:25:00 UTC hello@padlet.com adhyabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977921467 In the year 1965, Arno Penzias and Robert Wilson heard the echo of the big bang with a microwave. They first thought it was made by pigeons on the antenna but even after that, they kept hearing the sound so they discovered that it was a hum from the cosmos and they also got a nobel prize for their discovery.]]> 2022-01-06 04:39:36 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977921467 adhyabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977922092 2022-01-06 04:40:13 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977922092 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977922100 2022-01-06 04:40:13 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977922100 adityabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977923730 In the 11th century Ibn Al-Haytham was sentenced house arrest. This was because he couldn't find a way to control the flooding of the Nile river and claimed it was impossible. This Arabic scientist wrote 'The book of Optics' during his sentence. ]]> 2022-01-06 04:41:47 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977923730 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977925697 In the year 1865 James Clerk Maxwell discovered the connection between electricity and magnetism, electromagnetism. Discovering electromagnetism proved that light is an a electromagnetic wave.]]> 2022-01-06 04:43:30 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977925697 adityabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977926402 Cats have a special adaptation called 'gleaming eyes.' They get the gleam from a special structure resting behind their photoreceptors called 'tapetum lucidum.' This is made from crystal containing cells which reflect light. When it reflects the light, it let's the photoreceptors sense the light again, giving it a second chance to from an image. It also gives their eyes a glow. 

Fact: This method is what the artificial cats eyes we use on the roads is based on. ]]> 2022-01-06 04:44:06 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977926402 antara9 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977926896 In 1915, Einstein theorized gravitational lensing, which explained why galaxies far away can appear as rings around closer galaxies. The theory was that a large object bends the area around it creating a lens; this is able to magnify the light in a galaxy far away making it appear as a ring around a closer galaxy. ]]> 2022-01-06 04:44:35 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977926896 neelmanghirmalani2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977928310 In the year 1815 Augustin-jean fresnel made the fresnel lens and it could project light for miles away and it eventually became a light house he used to be a 8 year old who new nothing and now he is considered the father of the wave theory of light]]> 2022-01-06 04:45:48 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977928310 adhyabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977930857 Charles Kao and George Alfred Holcomb wanted to make glass the medium to carry telecommunications instead of copper so they made glass into fibers and purfied it so that it could carry a lot of information over long distances using light.]]> 2022-01-06 04:48:04 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977930857 adhyabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977931726 2022-01-06 04:48:43 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977931726 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977949253 Insects see all their favorite colors. They do this by grouping the photo receptors. But this gets rid of the details in the image. Fine details require a fine grid of photo receptors. The trick however is to balance the need for photons with the loss of detail to still find their flowers]]> 2022-01-06 05:03:08 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1977949253 adhyabhat2 https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1982989167 Many moths and animals are nocturnal and can see during night because their eyes can adjust and see when there is less light. In the eye, there are photo-receptors which detect and receive light which are called photons. When there is more light, there is are more photons and there are less photons in the night a Bigger eyes can receive more photons which make it easier for animals with bigger eyes to see in the dark.]]> 2022-01-10 03:39:49 UTC https://padlet.com/ekta5/5iom7rg237imbwn7/wish/1982989167