He was the chairman of several electronics firms and wrote a book on RFI / EMI shielding materials that was published in 1992 and in a revised edition with a new title of " EMC shielding materials " in 1997.
22.
And that means the building will have to be isolated from human contact and the waste inside it repackaged in shielding materials and placed in a new building once again _ unless a permanent disposal solution has been found in the meantime.
23.
To me, it looks like you couldn't direct the whole force of a magnet in one direction, but if you surrounded the whole thing except for a small gap with shielding material, it would warp the field so it only stuck out the gap.
24.
The effectiveness of a shielding material in general increases with its atomic number, called " Z ", except for neutron shielding which is more readily shielded by the likes of neutron absorbers and moderators such as compounds of boron e . g . boric acid, cadmium, carbon and hydrogen respectively.
25.
For this reason, a lead shield is only modestly better ( 20 30 % better ) as a gamma shield than an equal mass of another shielding material, such as aluminium, concrete, water, or soil; lead's major advantage is not in lower weight, but rather its compactness due to its higher density.
