space manufactuof acrylic vs. glass?

George, Gold and Lead are the absolute worst radiation
shields you could come up with. Sure, they will stop
the primary high-energy particles and radiation;
however, the act of stopping those high energy
particles and radiation creates a shower of secondary
particles that will cook you in seconds. When a high
energy particle (say an alpha particle from the solar
wind) strikes an atom of Lead, the initial particle is
stopped, but the Lead nucleus is shattered, sending a
cascade of lower-energy (but still lethal) particles
and radiation into your habitat. The absolute best
radiation shielding is made of low atomic weight
materials, and lots of them. That way you stop the
primary radiation without generating secondaries. The
radiation shielding would have to be much thicker if
it was made of hydrogen (or more likely: water,
hydrocarbons, or silicates), but the total mass per
square meter of surface area would be the same.