Light Absorption, Reflection, and Transmission

118 - Light Absorption, Reflection, and Transmission

In this video Paul Andersen explains how light can be absorbed, reflected, or transmitted as it moves from one medium to another. The reflection of different wavelengths creates the perceived color of an object. Absorbed light is converted to energy and transmitted light moves through the material.

Do you speak another language? Help me translate my videos:

Music Attribution
Title: String Theory
Artist: Herman Jolly

All of the images are licensed under creative commons and public domain licensing:

[lu-tmuz]

This was extremely helpful, I have a test in 2 days and I was still shaky about this certain topic but know I understand it better thanks to you!

[prestonmichael]

he makes it so easy to understand!!! thank you!!!

[zakark]

I just love this style of teaching, thank you sir!

[helium]

You are telling what and how and what but not why. Why are there different kinds of events?
Absorption: light pushes electron to a new quantum level (changing the state of the atom).
Reflection: light pushes electron to a new level but electron bounces back and sends out a similar wave (temporary absorption)
Transmission: electron is not able to be pushed at all because the light doesn't have enough energy.

[inSpihr]

I was kinda looking for more info of whats happening at the quantum level.

[sik.]

I study art major to avoid math and physics, but turned out I have to study how lights reflect on each objects including gummy bear and now I'm crying at how bad I am at both art and physics.
Very helpful and easy to understand video tho! I love it!! :D

[beacompassion]

Wonderful info and wonderful voice! I can see your strengths as a teacher but might I suggest that you SLOW IT DOWN. I'm and old lady of 65+ years who is exploring math and science for that awe I had as a child. You are wonderful but you need to slow it down and let the slower minds, that think while you're talking, who need time to listen and think, about what you JUST said before you speed onto the next teaching moment. I had to watch this several times to get it all wonderfully tucked away. Thank you so much for being light... just don't talk with the speed of it?😉👍

[ahmadalfan]

Best explanation and real world examples 👌🏼

[jasonbob]

this really shows why gummy bears should be eaten for science n stuff

[isaac_buckley]

Hey, that's Mt. Hood over Mirror Lake! I love that picture, the mountain is so beautiful.

[pepsi]

Really atoms of what make objects virbrate at a specific frequency, light has different vibration frequencies, but the virbration that matches the object will always bounce back.

The part of the light sprectrum that vibrates at the same frequency with the object is going to get reflected and the rest that do not match will get absorbed.

So what matches has the same polarity, just like magets will repeal.

[nicholasgiles]

tomorrow i got an exam HEAT, LIGHT AND SOUND.
Let's just say you helped me a lot with Light now just goatta go to Heat and sound

[justineladag]

It really helps me in my report thank you ❤

[franosbornblaschke]

At 01:27 the leaf is not reflecting light, it's transmitting (and absorbing) light. It is a backlit subject. It is not lit from the front.

[kellyevans]

Really helped with my test tomorrow. Thank you!

[Unlisencedmidwifery]

Im sorry but how do you hold light in your hand? i feel like this should have been explained on a deeper level.

[isl]

I am so happy that I found this video!

[khandakerrashidanjumlabib]

When a light ray enters into Glass from Air, What is about absorption? Where does the light energy go?

[furkancelen]

that was helpful thanks a lot helped with my exam

[ZeroDisturbed]

I went on a long bike ride at 12 pm under the sun wearing all black. All I could think about was if wearing black was the best choice. Like, most bikers wear bright green or yellow outfits. I was super confused so I looked it up on youtube as soon as I got home and fortunately found this video. When I took off my clothes I noticed that my skin was fresh and not burnt at all, most of the energy was absorbed by my shirt, not like other times when I went out wearing brighter colors.


Rad shit.