Potassium 40, the main source of radioactivity in our bodies, has a half-life of 1.42 billion years. Types of Radiation The term "radiation" is very broad, and includes such things as light and radio ...

Different types of radiation have different impacts on tissue, and those differences need to be taken into account when calculating dose, through weighting factors that reflect the relative ...

All types of radiation become less intense as they travel further away from the radioactive material. This is because the particles or rays become more spread out. The thicker the substance ...

Radiation therapy can be used in a few ways to treat people with breast cancer. There are 2 main types of radiation therapy for breast cancer. They are external beam radiation therapy and ...

This process, whereby species evolve rapidly to exploit empty ecospace, is known as adaptive radiation ... the process that had created so many types of finches that differed mainly in the ...

We have one of the widest selections of radiation therapy equipment in the United States. Our team has extensive experience treating patients with all types of cancer. They work together to develop ...

While space is usually described as a vacuum, it does contain some gas and dust. Over great distances that gas and dust absorb many types of radiation but radio waves pass through nearly unimpeded.

Radiation therapy for salivary gland tumors involves sending high-energy particles (usually photons or protons) through the skin toward the tumor. When the particles reach the tumor, they can destroy ...