Electromagnetic Spectrum and Waves vs. Photons
Electromagnetic Spectrum
Light is often described as a ray, a wave, a particle.
A ray is a straight line that moves from one point to another.
When light strikes rough surfaces they bounce off at many different angles. This is called scattering.
Refraction is when the light speed changes and the light rays bend.
James Blackwell says light is electromagnetic radiation (EMR): radiation made up of electric magnetic fields.
Light is often described as a ray, a wave, a particle.
A ray is a straight line that moves from one point to another.
When light strikes rough surfaces they bounce off at many different angles. This is called scattering.
Refraction is when the light speed changes and the light rays bend.
James Blackwell says light is electromagnetic radiation (EMR): radiation made up of electric magnetic fields.
Waves vs. Photons
Photons are “tiny lumps” of particles in light and they contain no mass. Photons are also found in waves. This explains why light “goes so fast” hence the phrase “the speed of light” The speed of light travels about 186,000 miles per second. If a photon moves in short wavelengths then that photon has more energy . This is why we have to be careful with x-rays radiation and UV rays. If the wavelength is longer, then that photon will have less energy .That is why it's not dangerous to stand in the way of radio or television when your favorite show is on.
Photons are “tiny lumps” of particles in light and they contain no mass. Photons are also found in waves. This explains why light “goes so fast” hence the phrase “the speed of light” The speed of light travels about 186,000 miles per second. If a photon moves in short wavelengths then that photon has more energy . This is why we have to be careful with x-rays radiation and UV rays. If the wavelength is longer, then that photon will have less energy .That is why it's not dangerous to stand in the way of radio or television when your favorite show is on.