Electromagnetic waves and deBroglie

Question 1

when are electromagnetic waves emitted

Answer 1

when charged particles are accelerated

Question 2

which fields combine to make an electromagnetic wave

Answer 2

oscillating waves around and also up and down

Question 3

what makes light a transverse electromagnetic wave

Answer 3

it has fields E (up and down) and B (side to side) that are perpendicular, in phase and oscillating at the same frequency

Question 4

why is no material needed for electromagnetic waves

Answer 4

they consist of a perturbation of the electrical and magnetic fields

Question 5

examples of oscillating charges generating magnetic fields

Answer 5

alternating current
quantum jumps by electrons
electromagnetic

Question 6

visible light range

Answer 6

400-800nm

Question 7

ultraviolet light range

Answer 7

10-400nm

Question 8

infrared light range

Answer 8

800-10^6nm

Question 9

define wave particle duality

Answer 9

an electromagnetic radiation possesses both the properties of a wave and off a photon

Question 10

first evidence of wave particle duality

Answer 10

electrmagnetic waves are emitted by atomic and nuclear charges in discrete event involving fixed amounts of energy

Question 11

equation for energy of an electromagnetic wave

Answer 11

E = h * v
h is planck constant
v is frequencyu

Question 12

equation for wavelength that goes with the one for energy

Answer 12

c = lamda * v
but more usefully
v = c/lamda

Question 13

what is the use of the deBroglie equation

Answer 13

simultaneouslycorrelates waves and particles

Question 14

the deBroglie equation

Answer 14

lamda = h/p

where p is momentum (m * c)