Above the water, the light reflects from the straw through the air and glass to your eyes. But below, when the light also travels through water, the refraction causes the image of the straw to be ...

Rather than always traveling in a straight line, like you'd expect, light can change directions based on the medium its ...

(If using a straw, remove your finger from the top to ... as it moves from the air to the glass. The index of refraction for the oil is very close to the index of refraction for glass.

An easy way to see refraction in action is to put a straw into a glass half-filled with water. From the top, it looks like the straw is bent or broken. From the side, depending on where in the ...

It is refraction that makes some objects appear to bend when they are viewed through water, like the straw shown here. If the light hits the surface of a glass block at an angle, this change in ...

Optical density and index of refraction are defined and related to reflection and refraction. The concept of refraction is used to explain mirages. Students use mirror equations to determine the ...

Refraction is explained by looking into a pool and seeing Snell's law in action. Unit 6 Segment M: Refraction Refraction is explained by looking into a pool and seeing Snell's law in action. We ...