Strontium-85 has a half-life of approximately 64.8 days. To determine how long it takes for the radiation level to drop to one-sixteenth, we need to go through four half-lives, since (1/16 = (1/2)^4). Therefore, it will take about (4 \times 64.8) days, which is approximately 259.2 days for the radiation level of strontium-85 to drop to one-sixteenth of its original level.
128 days
The time it takes for the radiation level of strontium to drop to one-sixteenth of its original level can be determined using its half-life. For strontium-90, which has a half-life of about 29 years, it would take four half-lives for the radiation to decrease to one-sixteenth (since (1/2^4 = 1/16)). Therefore, it would take approximately 116 years for the radiation level of strontium-90 to drop to one-sixteenth of its original level.
320 d
Ionizing radiation, such as alpha and beta particles, can be deflected from their original path when they strike an object due to collisions with the atoms and molecules in the material. This deflection can cause the radiation to scatter or be absorbed by the object, depending on its composition and energy level.
220svr
High-level-control fluoroscopy increases radiation dose to the patient.
It is potentially dangerous. The radiation level found in granite is enough to suppress the immune system, cause birth defects, and cause cancer. There are granite composite options which are not containing the level of radiation that is dangerous.
Gamma rays have the highest energy level among all forms of electromagnetic radiation.
The level of radiation emitted by a light bulb is very low and considered safe for everyday use.
Joseph J. Mangano has written: 'Low-level radiation and immune system damage' -- subject(s): Health aspects, Health aspects of Low-level radiation, Immunosuppression, Low-level radiation
Background radiation.
If you are given the "the total radiation" (e.g. 100 rads of radiation) and you are given another radiation level (e.g. 75 rads of radiation) and then you are asked: 'What is "the fraction of the total radiation?"', then you would answer "75/100".