7 & 9 Flashcards
What is photoelectric effect?
It converts light coming from the scintillator to the flow of electrons
Calculate frequency
f=1/T
What is a photon?
particle of light energy
What is photon energy?
The amount of energy packed in a photon
Formula for photon in energy
The amount of energy packed in a photon
dual nature of light
the statement that light exhibits both wave and particles properties
The wavelike character of light is manifested during ______
Diffraction
Interference
Polarization
The particle nature of light is manifested during _____
(!) Photoelectric effect
(2) Refraction
(3) Reflection
(4) Excitation
(5) Ionization
Waves are described and measured by five wave parameters
the period, the frequency, the amplitude, the wavelength, and the speed.
Fill the gap
What is electromagnetic spectrum?
The electromagnetic spectrum is the range of frequencies of electromagnetic radiation and their respective wavelengths and photon energies.
Difference between diffraction and refraction
Refraction is the change in direction of waves that occurs when waves travel from one medium to another. Refraction is always accompanied by a wavelength and speed change.
Diffraction is the bending of waves around obstacles and openings. The amount of diffraction increases with increasing wavelength.
Application of photoelectric effect
The photoelectric effect occurs when an x-ray interacts with an electron in the matter.
Scintillation counter
