#Light Reflection Refraction

[rajansmoorthy]

Experiment: Determination of Focal Length of a) Convex Lens b) Concave Mirror by Obtaining the Image of a Distant Object

Focal length of a convex lens & Concave Mirror: a). Focal length of a convex lens: Objective: To determine the focal length of a convex lens using a distant object (like a sun, tree or tall faraway building). Principle: A convex lens converges parallel rays of light (from a distant object) to a point called principal focus (F). The distance between the optic centre (O) of the lens and the…

[nh-art]

This life

[chelseaalexandriaaesthetics]

I find it magical how sunlight through crystals creates rainbow refractions 🌈 💎 ☀️

[kevinmcdonaldphotos]

walking on and on

[edwardwonghaupepelutivrusky4th]

😭✨

[awehaven]

Playing with the Light.

©Robin Fifield 2023.

[plaguery]

actually the romy rainbow vergil lightning comparison is really good. the storm that is approaching and the rainbow left in its wake :)

[crystalpallette]

I love it when they give guns to pretty girls and also they are in summerwear

[babsbabbles]

you hear all this poetry about love being an open bleeding heart and hands splayed out and reaching, and that is true, but love is more than blood and hearts and hands. it is sweat and sorrow and stumbling full force and weak kneed. it is reaching forward and reaching back and reaching upward and reaching down. it is lungs and livers and stomachs and feet. love is played on the body like an instrument, it is stored in the body and preserved, it is poured out from the body like insence and oil. the thing that greases your insides is love. the thing that wove your sinew is love.

[physics-for-fishes]

How Rainbows Form pt. 2

To add to a previous post, this one explains how rainbows appear to us as half-circles!

Ok, so other than the dispersion of light in raindrops, another factor in the occurrence of rainbows is seeing them. We do not see every individual rainbow formed from each droplet because we’re too far away to see them. Instead, we see different individual colors from different raindrops based on their height and angle from us. 

A raindrop at a 42-degree angle from us relative to the sun would reflect red light to us and end up looking red. The other raindrops below it would look orange, yellow, green, blue, and indigo in the angles between 40 and 42 degrees. Violet would be below the other colors at a 40-degree angle from us and the sun.

This would also explain why we see rainbows as an arc or half-circle. According to Wikipedia, “A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center”.

The sun shines light on many points at once from its direction. For an observer to be able to see colors from a rainbow, the dispersed light reflected from the sun would have to reach them from an angle. This means that all the other raindrops reflecting colors to the observer would also have to reach their eyes at 40-42 degree angles, which also leads to all the points (in this case, raindrops showing color) being at similar distances away from the observer.

 To make this easier to understand, I tried to use a triangle ruler where the lines (base and hypotenuse) represented the path of the light from the sun to the observer’s eyes; the point of the triangle touching the ground would represent the observer.

 If the triangle was tilted so that the point on the bottom stayed in its place, it would go in the direction of an arc. If all the points on this arc were mapped out, it would form a half-circle or at least part of one. 

It would form a full circle if no ground or horizon were blocking the triangle ruler. This is the same for rainbows. Rainbows are full circles, but the lower half is usually blocked by the ground or horizon. This is also the reason why people on airplanes or in the sky can sometimes see rainbows as circles because the horizon does not block them.

Rainbows are also similar to mirages since they’re a result of the behavior of light, so unfortunately you can’t ride them or find any gold at the end. Additionally, the rainbow will move with you because only certain raindrops can form the rainbow you see depending on your position and location; Buttttt! this also means that everyone sees a different rainbow, which makes each rainbow as unique as the observers who look at one :) even though it may not look that way at first glance

I’m gonna stop writing about rainbows now but I hope this and the other post were good explanations for the formation of rainbows! 

[terrainunexplored]

Refract

Sophie Körner. Farringdon, London.

[goldenangeldust]

I saw another halo rainbow 🌈🩵

[costolostudio]

https://www.instagram.com/rosecostolo/

[kevinmcdonaldphotos]

shine on windowpane

[edwardwonghaupepelutivrusky4th]

okay i've answered my own question and i think i can say that the purple/pink that shows up when ember & wade's orange & blue mix, usually on wade when he's close enough to ember, IS additive color mixing!

i remembered that some physics site might have an interactive additive light toy, and:

turning down the green creates the orange (instead of yellow) and cerulean/azure (instead of cyan), and the combination of those colors Is a pinker/lighter magenta!

put that color against a screenshot:

it's the reflection of ember's light off wade: the brighter parts of her are yellow, and the brighter part of her reflection in him is an even brighter pink, closer to white, which lines up with the colors mixing additively, since yellow has more green light than orange, and this [combo of their colors] pink is the result of what would be white light with some of the green taken out. add it back in, and it's closer to white

i think it's really neat; love that for them

[vaniliens]

KINU NISHIURA MENTIONED???