how can radiation penetrate eveything but still leaves no visible holes
In: Physics
The holes are already there, they’re just too small for you normally
Objects are uniform solid things, most of the volume is just empty space between the atoms, but because its electrons and your electrons push back at each other from a distance it seems solid to you
Objects are more like a dense forest. If you try to drive a big car through it you’ll just get stuck because there isn’t enough space between the trees, but you can walk through it and if you were the size of a mouse then there’d be tons of room between the trees to sneak through
Radiation is little high energy particles like electrons or photons like gamma rays that are soooo tiny that they can easily squeeze through the space between the cores of atoms and get out the other side. If you want to stop them then you need to put enough big atoms packed closely together in its path (like in a dense element like lead) so that the particle will almost certainly hit something before it can pop out the other side. Even when it does hit something it generally just gets absorbed and turned into a bit of heat in the material rather than blowing a hole through it like a bullet might
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