Reflection and refraction of colored light in water air surface 2, varying incidence angle

Light propagating in water reaches a plane surface separating water from air. A fraction of light reflects back and the remaining fraction refracts to air. As the incident angle goes up more and more light reflects until the critical angle is reached. For angles of incident greater than the critical angle all the light reaching the surface reflects (total internal reflection).

Some colored filters are glued at the orifices. The original light from this apparatus is white halogen.

Category:

Science & Technology

Tags:

• optics
• water air surface
• reflection of light
• refraction of light
• laws of reflection
• laws of refraction
• total internal reflection
• reflexão
• refracção
• refracção da luz
• reflexão da luz
• leis da reflexão
• leis da refracção
• separação água ar
• reflexão total
• superficie plana de separação
• óptica;
• varying
• incidence
• angle

[QueenElzFST]

Hi there! I was looking for some interesting and simple project for my physics class, I really think this is a good option! :D

Yet i have a couple of q's

1. Are those leds?

2. The light is OUTSIDE the container right?

:D thanks for your help! :D

[rosabrigida2005]

@QueenElzFST

1. It´s white (halogen) light with colored filters in front of the orifices

2. Yes, the light is outside :)

[rosabrigida2005]

Its white light with colored paper filters in front of the orificies. Simple :)

[alcx112]

Thanks a lot for this video!

[Paolajojo]

Hi, could you help me telling me where sac as this experiment, what materials to use and how organized to do this is very nice and interesting experiment. Please expect an answer ....?¡

[yellow2purple1]

Omg I actually get it now ! I have a question my teacher gave me an assignment -If we put a lamp into a lake and cover it with a circle what would happen ?

XD Could someone smart pls answer ...

will the light be able to come out ? Would the light reflect n she said it had something to do with total internal reflection ! PLS SOMEONE HELP !

[meteolazob]

Put on water some oil too.

[QueenElzFST]

@salty432 rather than the color, the surface is the one that matters I think

[eileenjimena]

@rosabrigida2005 Hey, excuse me... I have to do a demonstration about this topic, and I'd like to do this experiment, but I don't really know how you organized the materials... So... Is there any possibility you could please mention them? Thank you.

[HKNajjar]

Theoretically, I found that in fresh water the critical angle(full reflection angle) is aprox. 7 degrees. I see it much bigger here =/. I used a relative permittivity of 81 F/m.