Radiation: How much is harmful?

April 07, 2011

Not all radiation is the same, so scientists use the ‘sievert’ to measure the health risks of radiation. A one-sievert dose of radiation would cause immediate radiation sickness. But most radiation doses are much smaller, so you’ll see them measured in millisieverts or even smaller microsieverts.

1 sievert = 1000 millisieverts 
1 millisievert = 1000 microsieverts

This could be interesting for you

Nobody really knows what long-term damage nuclear disasters like Fukushima will do to the environment and people. Radiation is an invisible, long-lasting, and complex threat. This gallery explains where the released nuclear material will go, and how it travels. 
True energy independence starts at home, but which renewable energy is the best for your house? Here are some easy ways to create your own power. 
Confused by cores, containment vessels, and cooling systems? Here are some explanations to help you better understand nuclear power.