A particle - such as a photon - has a certain probability of being in different places. It can't be known for sure, in advance, where it will actually be located. An experiment that focuses on particle properties may then find that the particle impacted in a specific place - but this can't be known in advance.
a photon is a photon is a photon
A packet of light energy is called a photon.
The minium required energy of a photon that is involved in the creation of an electron-positron pair (which is pair production), is 1.022 MeV.An electron-positron pair has a given probability of being produced when a photon of the stated energy (or a higher energy) passes close the nucleus of an atom. Pair production does not happen "in the presence of a photon" but happens as a direct result of the the actual presence of a photon (having at least the stated energy) in the presence of an atomic nucleus. The presence of an atomic nucleus is necessary to insure conservation of the quantum mechanical characteristics of the event. Said another way, the high energy photon alone cannot spontaneously create the electron-positron pair in pair production. A link can be found below to related questions.
A 2 percent tornado probability typically means that isolated and probably weak tornadoes are possible.
Mean has two meaning 1.airthmetic mean 2.Expected value of a random variable which is also called a population mean. in statistics and probability theory it is defined by lambda i.e, the arrival rate of a people in a specified unit of time.
They measure the probability (or rate) at which a photon is being absorbed through spontaneous absorption (the A coefficient), and also the probability at which a photon is being emitted through spontaneous and stimulated emission (the B coefficients).
The MV in MV photon means megavolt
projected arrival
It isn't clear what you mean by "its" inertial particle. There is no inertial particle associated with the photon.
From a probability perspective fair means equal probability.
Read the introduction to probability and probability measures at StatLect.com
Estimated arrival time
It means multiply, Probaility of A and B means probability of A multiplied by probability of B.
The mean of a binomial probability distribution can be determined by multiplying the sample size times the probability of success.
Estimated arrival time
"Una llegada" translates to "an arrival" in English.