WHAT IS LIGHT MADE UP OF ? 1: ligth is an electro magnetic wave
_ just like radio waves, microwave, x-rays
- electomagnetic waves typical starts when an electric change jiggleback and forth 》 depending on the frequency of the elector magnetic wave you get different types of waves e.g.radio waves have a low frequency meanig that they have long wave length ( the peaks are far apart from each other while in gamma rays the have high frequency hence a the peaks are close to each other Light has photons this means that when ligth is absorbed or emitted the energy in the wave comes in lumps the size of these lumps a(or quata) of energy depend on the frequency ( the higher the frequency the higher the energy per photon) "IF THE PARTICLE IS MASSLESS HOW CAN IT BE MATTER" since matter is defined as is any thing the occupy space and has mass
The answers is that they are two kind of partical which have zero invarient mass (restmass) by but if it's zero you can never get those particals to be at rest (they always move at a speed of light)
A}- the two praticals are the photons and a similar partical called a gluon》which is alot like aphoton in many ways but carrys a strong force instead of the electromagnetic ones Hence photons can have energy (E) and momentum (p) Einstein's special relativity says that E^2=P^2C^2+M^2C^4 If E=pc ,then were all okey with zero mass M but nonvanishing energy and momentum hence E=pc Neutrinos are being neutral cousins of the leptons ... Electrons muons and taus are the leptons
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