HALF-4
14 / 12 / 2010
HALF-4: meaning and examples
Hello again.
Today we continue with our series of Daily Vitamins about expressions and compound words with half.
Today's expression is: half-life
Meaning: the period of time it takes for a substance undergoing decay to decrease by half. The name was originally used to describe the time taken for the radioactivity of a substance to fall to half of its original level.
Example 1:
Some scientists say that plastic has a half-life of between 450 and 1000 years; so use plastic as little as possible.
Example 2:
Some nuclear substances have a half-life of millions of years.
If you have any questions about today's Daily Vitamin, please post your comments in the Daily Vitamin section on our website.
https://www.ziggurat.es/es/lecciones_ingles/index.asp
Enjoy the rest of your day.
Today we continue with our series of Daily Vitamins about expressions and compound words with half.
Today's expression is: half-life
Meaning: the period of time it takes for a substance undergoing decay to decrease by half. The name was originally used to describe the time taken for the radioactivity of a substance to fall to half of its original level.
Example 1:
Some scientists say that plastic has a half-life of between 450 and 1000 years; so use plastic as little as possible.
Example 2:
Some nuclear substances have a half-life of millions of years.
If you have any questions about today's Daily Vitamin, please post your comments in the Daily Vitamin section on our website.
https://www.ziggurat.es/es/lecciones_ingles/index.asp
Enjoy the rest of your day.
