High School Physics 7

Khan Academy flashcards.

lowest photon energy

the colors as following red, orange, yellow, etc.

highest photon energy

the colors as following violet, blue, green, etc

speed of light in a vacuum

3 × 10⁸ meters per second (m/s), the maximum speed at which all energy, matter, and information in the universe can travel.

diffraction of light

the bending of light waves as they pass around the edges of an obstacle or through an opening.

refraction of light

the bending of light as it passes from one medium to another due to a change in its speed.

When transmitting, an antenna converts

electrical energy into electromagnetic (EM) waves.

When receiving, an antenna converts

electromagnetic (EM) waves into electrical energy.

If a wavelength of a color is shown, then

that wavelength color and higher photons are used.

Photons from the sun enter the cell. Their energy is absorbed by electrons in the solar cell. . .

which then flows in one direction.

photovoltaic solar cell converts

light energy into electrical energy