3.2.1.3 Particles, Antiparticles and Photons Flashcards
What is an antiparticle? What are its properties in relation to a particle?
An antiparticle is a matching opposite of a particle. It has: Same mass Same rest energy Opposite Charge Opposite Spin direction.
What is the symbol for a proton?
Symbol for a proton is p
What is the symbol for an antiproton?
The symbol for an antiproton is p with a line on the top.
What is the relative charge of an antiproton?
Relative charge = -1
What is the rest energy of a proton and an antiproton?
938.3 MeV
What is the symbol for a neutron?
The symbol for a neutron is an n.
What is the symbol for an antineutron?
The symbol for an antineutron is n with a line on the top.
What is the rest energy of a neutron and an antineutron?
939.6 MeV
What is the symbol for an electron?
e -
What is the symbol for a positron?
e +
What is the relative charge of a positron?
Relative charge = + 1
What is the rest energy of an electron and a position?
0.511 MeV
What is the symbol for a neutrino?
The symbol for a neutrino is Ve
What is the symbol for an antineutrino?
The symbol for an antineutrino is Ve with a line on the top.
What are the properties of a neutrino and an antineutrino?
Both have 0 relative charge.
Both has 0 Mass in Kg.
Both has 0 Rest energy in MeV.
What can infrared cameras be used for?
We can use them to observe objects in darkness.
What is light a small part of?
Light is a small part of the spectrum of electromagnetic waves.
What is the speed of light in a vacuum?
The speed of light in a vacuum, c, = 3.00 x 10^8.
What is the symbol for wavelength?
Lambda.
What is the unit for wavelength?
Metres, m.
What is the symbol for wave speed?
v.
What is the unit for wavespeed?
Metres per second, m/s.
What is the symbol for frequency?
f
What is the unit for frequency?
1/seconds, or hertz.