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Two units you should know

Basic Knowledge on Radiation

2.Two units you should know

What are commonly used units?

Will you teach me about radiation and radioactivity units?

女の子
博士

Let's discuss two commonly used units in detail.

Becquerel (Bq) and Sievert (Sv).

Bq

Becquerel

Unit of measure of the ability of a radioactive material to emit radiation
= intensity of radioactivity.

Radioactive material

alpha rays

beta rays

X-rays, and gamma rays.

Radioactive material

Radiation includes alpha rays, beta rays, X-rays, and gamma rays.

Sv

Sievert

A unit of measurement of the effects of radiation exposure on humans.

博士

human

Effects on the body are expressed in Sv.

女の子
博士

Let's look at some situations where these two units are commonly used.

Bq

Becquerel

used per weight or area.

Bq/kg
Bq/cm2

Sv

Sievert

used per hour.

mSv/y
mSv/h

About Units

One thousandth of 1 Sv is 1 mSv and one thousandth of that is 1 μSv.

About Units
博士

Even if the radioactive materials are different, if the numbers in sieverts are the same, the effects on the body are the same.

I want to know more about numbers and units.

女の子

Here's the point!

Bq

Becquerel

A unit of radioactivity strength

Sv

Sievert

A unit that measures the radiation dose received by humans

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