Radiotracers generally have short half lives. Detection requires a number of decay events. Using material with a short half life means a smaller amount is required and that after the detection the amount of residual radiation is reduced.
No. Its generally the other way around. The short-lived natural isotopes have all decayed, so only the long-lived natural isotopes remain.
Short half-lives
Because they are mostly very radioactive and many have long halflives
o-short/a-long
This is characterized by long winters and short cold summers
None. Mendelevium is synthetic; it cannot be created in nature, and requires large energy input (such as those from an artificial nuclear reactor). The majority of its isotopes have halflives measured in hours and minutes; they degrade during processing and shipping long before they could be consumed.
short term
Because they are mostly very radioactive and many have long halflives
They are generally short, and they do not shed
No, "alligator" is not a short vowel word. It contains a long vowel sound, spelled with two vowel letters "a" and "i."
Short-term and Long-term
Bonds are generally considered long-term obligations.
There is no set length, but generally from the size of a pistol to that of a short rifle.
Generally, yes.
Natural period of a long pendulum is slower than for a short pendulum.
In English, the word "whale" has a long A sound. Generally, when you see an E at the end of a one-syllable word, it makes the vowel have a long sound: tame, made, face, and whale are some examples of words with the long A sound.
long
it can take as short as 5 min. depends how much you practice it...
The 7mm Mauser is generally considered short action. 7x57 is shorter than 30-06. OTHER 7mms are different lengths.