and by "unshielded" you mean with several meter of water in between you and the core :P
@selea
Indeed
@valleyforge
@valleyforge
Neither directly glow blue. The blue is from cherenekov radiation and is caused by high energy alpha and beta radiation (but not gamma or neutron) slowing down as they pass through the water.
@selea
@valleyforge
@freemo
aaaah you are talking about the big lamp!