Things don't contain radiation. They can EMIT radiation, but they do this by actively producing it. It's like people emit sounds when they talk but there isn't a load of sound sitting inside the person waiting to be released.
Radiation questions are always tricky, because there is no one type of radiation and there is no single answer.
First let's assume this question is more like "How could canned goods become radioactive?" The short answer: Canned goods will not become more radioactive unless you place them next to a extremely high energy beam, which exists only at research facilities. I say "more", because every item on earth that has carbon in it is also slightly radioactive. "You" are naturally radioactive at very very very low levels.
Canned goods could be initially packaged with radioactive material. In today's environment, with the Japan crisis, our biggest problem, and it's small, is with Iodine. Two forms of iodine are radioactive and our thyroid takes up a lot of iodine. The good news on this is two-fold: the worst radioactive iodine has a half-life of 8 days, so that if it is canned, transported and left on a shelf for 2 weeks, the amount of radioactive iodine is already 25% of what it was originally - use table salt, not sea salt, while technically the same, table salt is refined and has non-radioactive iodine added (usually). That already helps our thyroid by filling it with good iodine.
To reduce today's risk - listen to people monitoring the radiation. There are so many people doing this now, it's easy to find. If there is a higher amount and our government is concerned about it, they have done a lot of research on this..... Purchase canned goods from the Southern Hemisphere, they're not getting the same amount of radiation, or simply, the easiest, let your canned goods sit on the shelf for 24 days to reduce the amount of radiation to only 12% of what it was when you bought it.
Radiactive isotopes emit ionizing radiations.
the sponge
Generally no radiation is safe. You cannot "inject" radiation into anything because it is the product of various unstable nuclei decaying. Alpha radiation is much more ionising than gamma, but much less penetrating than it. That makes it more dangerous if it is inside your body; it can be stopped by skin. Therefore you would have to swallow a sample of a radioactive material. However, gamma radiation is always emitted together with alpha or beta radiation.
Not directly, but it allows them to monitor how much dose of radiation they have received over a period of time, so they can look at it and check they haven't received too much dosage.
Yes, even though they do emit ionizing radiation. The amount of radiation emitted from a smoke detector is about 1 hundredth of a millirem per year. The background radiation from radioactive isotopes in the ground is about 300 millirem per year. So the ground your standing on right now is exposing you to more radiation then your smoke detector ever will.
Yes, alpha radiation is an ionizing radiation.
Yes, but there are a number of radiation besides ionizing radiation.
For many years, there was radiation in the air in Japan from the dropping of atomic bombs on Hiroshima and Nagasaki. However, Japan is perfectly safe to visit today, with no risk of radiation poisoning.
without a bunker, it is very unlikely youll be 'safe'. as to the fact there is alot of radiation involved, so if you survive the explosion you may be killed by the following radiation.
They are totally rebuild and safe on radiation.
no they do not because it is just a motor. there is no radiation that comes out of rc boat motors. it is completely safe when it comes to radiation, that is.
probably not because the can can burst!!!!!!
Goods safe for environment
No. It emits radiation and is very harmfull without a proper Radiation Protective equipment
none. They are safe.
Ct scan
non-threshold
malt vault
Yes, Pyramids keep the Goods safe so that they can go to the under worlds and become a different person agian. Well at least that is what all of the egyptians thought that is why the make the pyramids to keep there souls safe from robbers.