Hardly any at all. New advances in technology enable the film to be more sensitive to radiation. A chest xray has less radiation than walking to your car in the parking lot in summer.
to figure out how much radiation is needed to go thru body ........inverse square law
Is how much radiation goes through a material.
The heart is responsible for circulating blood through the body, and the lungs are responsible for oxygenating it. Both are needed to get the much needed oxygen to the cells of the body.
The amount of dirt needed to protect from radiation depends on the type and intensity of the radiation. Generally, at least several feet of soil are needed to provide adequate protection from most types of radiation. It is best to consult with a radiation protection expert to determine the exact amount needed based on the specific circumstances.
Concrete is a common material used to shield against radiation. The amount of concrete needed to effectively stop radiation depends on the type and intensity of the radiation. Thicker layers of concrete provide better protection against radiation. Generally, a thickness of at least several feet of concrete is needed to effectively stop most types of radiation.
Lead is a dense material that is effective at blocking radiation. The amount of lead needed to effectively block radiation depends on the type and strength of the radiation. Generally, a thickness of at least a few millimeters of lead is required to provide adequate protection against most types of radiation.
My Astronomy professor says that we need at least 15 feet of concrete to block nuclear radiation.
0. its a complete myth that computers emit radiation. in a purely physical sense the light from your monitor and heat from the CPU can be described as radiation, but neither of these propagate through tissue. it is no less healthy to spend 2-18 hours in front of a computer than a TV.
almost none the vast majority of visible light passes through the atmosphere.
A lot
Air acts as a barrier to some forms of radiation by absorbing or scattering them. However, the amount of air needed to completely stop radiation depends on the type and energy of the radiation. In general, thicker layers of air will be more effective at stopping radiation.
not much in full body but needed in arms and legs