How do you find the wavelength of a yellow light?
The frequency (f) and wavelength (d) are related by the equation f = c/d, where c is the speed of light (approximately 2.99 x 10^8 meters per second). A specific yellow light might be 570 nanometers in wavelength, therefore, (2.99 x 10^8)/(570 x 10^-9) = 5.24 x 10^14. The yellow light’s frequency is 5.24 x 10^14 Hertz.
What is the no of photon of light with a wavelength?
2.012 * 10^16.
What is the number of photon of light?
The energy of a single photon is: hν or = (h/2π)ω where h is Planck’s constant: 6.626 x 10-34 Joule-sec. One photon of visible light contains about 10-19 Joules (not much!) the number of photons per second in a beam.
What is the wavelength of light?
Light or visible light is electromagnetic radiation within the portion of the electromagnetic spectrum that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nm, between the infrared (with longer wavelengths) and the ultraviolet (with shorter wavelengths).
How do light waves travel?
Light waves travel in straight lines. You can detect them with your eyes, and also with instruments such as cameras. They are reflected by mirrors and change direction when they travel from the air into glass or water. Light travels very fast.
What light travels fastest?
Explain that unlike sound, light waves travel fastest through a vacuum and air, and slower through other materials such as glass or water.
Which travels faster blue or red light?
Because the number of subquantum energy in a red photon is less than that of a blue photon, red photon interactions are less than the blue photon in the medium. So, the red light travels faster than the blue light.
Why does light travel faster in water?
* Light slows down when it passes through other media, such as air or water. The presence of particles impedes the photons through scattering. However, light travels at about 0.75c (75% light speed) through water. Some charged particles can move faster than 0.75c in water and therefore travel faster than light.