0
A lot of the time when you're trying to measuring the value of something, there are things going on, independent of you and what you're concerned with, that can mask the true value that you're looking for. For instance, say you wanted to measure how loud your computer is, but a neighbor is blasting their music so loudly that you can't even hear your computer. So, what the experimentalist would do would be to first measure the music by itself, the background count, then measure the computer + background count, and then subtract the first measurement from the second leaving only the computer noise.
In nuclear decay measurement, especially gamma radiation, there are a lot of things in the background that skew the gamma ray measurement you're trying to make, mostly caused from long-lived radioactive isotopes that naturally occur in everything (K40 comes to mind). So you just simply measure those background energies by themselves and then subtract them from your data.
What else can I help you with?
Is there a difference between background radiation and background count rate?
There is a subtle difference. Background count rate is the measure of how strong the background radiation is.
Do i have the power to influence cabbage's growth rate with my Red Blood Cell count?
certainly not! How would your blood cell count have anything to do with a cabbage's growth rate?
What happens to the count rate from a radioactive sample during 3 half lives?
The count rate decreases to 12.5% of the initial value after 3 half-lives, as radioactivity is reduced by half during each half-life.
What do you need to measure the rate of respiration?
The rate of respiration is the number of breaths per minute. All you have to do is count either the number of breaths in OR out (not both) in one minute. To get more reliable results, the experiment should be repeated several times.
How many years would it take to count 10 billion trillion stars in the universe?
If you counted at the rate of one number per second, it would take 320 trillion years to count to 10 billion trillion. It makes no difference WHAT you're counting.
Is there a difference between background radiation and background count rate?
There is a subtle difference. Background count rate is the measure of how strong the background radiation is.
How do you use the geiger muller tube to test for alpha?
Do you want to verify that a radioactive source emits ONLY alpha particles? If so, first measure the original count-rate, with no radioactive source, on the GM-tube. This is the background count-rate. Next, place the radioactive source near the GM-tube, and measure the new count-rate. Place a thin piece of paper between the GM-tube and the source. You will see that the count-rate dropped to the background count-rate. This is because all of the alpha particles are absorbed by the paper. If there were other types of radiation, like beta and gamma radiation, the count-rate wouldn't drop to the background count-rate.
Why is the background count is not constant?
The background count for radioactivity is not constant because of radioactive decay. Natural radioactivity is found everywhere, in the air and on the ground we walk on.
What is the relation between hemoglobin count and pulse rate?
There is relationship between pulse rate and hemoglobin count because as per your blood sensitivity you got your pulse rate high and low so this is true that there is relation ship between pulse rate and hemoglobin count.
What is Count Olaf's ethnic background?
i knew him he is an orphan too
Do i have the power to influence cabbage's growth rate with my Red Blood Cell count?
certainly not! How would your blood cell count have anything to do with a cabbage's growth rate?
If a patient has tachycardia how do you count pulse rate?
count pulse on wrist for 15sec.and x by 4.
How do you count your pulse to get an accurate heart rate count?
Heart rate is usually recorded in beats per minute. So find your pulse either in your wrist or your neck and count. If you don't want to count for the full minute, count for 15 seconds and multiply by 4.
Which state of India starts to count death rate?
karnataka
Why do you count the pulse for one minute?
I believe you are supposed to count for approximately 60 seconds to get an accurate heart rate reading.
What is pollen rate?
There is no such sense of a pollen "rate," but there is of a pollen count. Which means the average pollen grains in a cubic meter!
What is the term for the background rate of sympathetic and parasympathetic activity?
Autonomic tone
