A lot of things, but I think you might be referring to which form of radiation since this is the classic answer as to what would stop Alpha radiation.
Furthermore tinfoil would stop alpha and beta radiation and lead would stop alpha, beta and gamma radiation.
A few millimetres of lead.
a black sheet of paper
Thickness of a sheet of paper would not be measured in feet, but possibly in inches. An average sheet of typing paper is about 1/200 of an inch.
put the sheet of paper in a photocopier and press down on it or you can get a very heavy book and put the paper in it
paper
A few millimetres of lead.
Both Beta and alpha particles can be blocked by a block of lead. Alpha particles can even be blocked by a sheet of paper, and beta particles can be blocked by a thin aluminium plate.
Alpha. Beta particles are blocked by a few mm of aluminum and gamma by a few cm of lead. Alpha. Beta particles are blocked by a few mm of aluminum and gamma by a few cm of lead.
a black sheet of paper
a black sheet of paper
A SHEET of paper.
The Alpha Particle has a very short range and can be blocked with heavy paper shielding.
Thickness of a sheet of paper would not be measured in feet, but possibly in inches. An average sheet of typing paper is about 1/200 of an inch.
The torn sheet has undergone a physical change, the burned sheet has undergone a chemical change, and the crumpled sheet has undergone a physical change.
The term 'paper sheet' is a countable noun. The plural form is paper sheets.example: Nine paper sheets were attached to form one giant sheet.
Une feuille de papier is a sheet of paper in French.
Beta particles are not stopped by a paper sheet.