lab45 - LAB # 42: RADIOACTIVITY INTRODUCTION: How much...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
LAB # 42: RADIOACTIVITY INTRODUCTION: How much "background" radiation is there in the world? Your body has a volume which is over 5000 times larger than this counter. How many "rays" per minute is your body getting? Note that it's only the radiation that has a collision inside your body that is dangerous. Most of the radiation in this room passes right through the Geiger counter and your body without any signal or indication that it went by (remember, your body is mostly empty space). When radiation collides with an atom in the counter, we get a pulse out which we can count. When radiation collides with an atom in your body, it may kill or mutate a cell. Note well that we seem to have been living with this present natural background radiation successfully for a long time. READ NOW! SAFETY PRECAUTIONS The radioactive sources being used are very small in intensity (m Ci). Obtain a source from your lab instructor-you must sign for it. Please be careful with the sources. They are safe if you are close to one for only a few hours, but if a source accidentally fell into a pocket or purse it could be dangerous. When you are finished using your source, please return it directly to your lab instructor. The sources contain a small amount of radioactive material which has a very long half life. This means that the amount of radiation changes very slowly over a period of many years. GENERAL SAFETY Precautions 1. Return all radioactive material to the lab instructor before leaving lab.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/29/2012 for the course PHYS 227 taught by Professor Rabe during the Fall '08 term at Rutgers.

Page1 / 6

lab45 - LAB # 42: RADIOACTIVITY INTRODUCTION: How much...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online