How does the rem relate to the sievert?

How does the rem relate to the sievert?

• A. 1 Sv equals 100 rem
• B. 1 rem equals 0.01 Sv
• C. 1 rem equals 1 Sv
• D. 100 rem equals 1 Sv

Answer: (B)

The essential idea is that rem and sievert measure the same thing—dose equivalent that accounts for biological effect—but in different unit systems. The sievert is the SI unit, and the rem is a traditional unit still used in some settings. Their relationship is a fixed scale: 1 sievert equals 100 rem. That means 1 rem is 0.01 sievert. So expressing the conversion as 1 rem = 0.01 Sv is the simplest way to show how a measurement in rem converts to sievert, and it also means 100 rem = 1 Sv.

The essential idea is that rem and sievert measure the same thing—dose equivalent that accounts for biological effect—but in different unit systems. The sievert is the SI unit, and the rem is a traditional unit still used in some settings. Their relationship is a fixed scale: 1 sievert equals 100 rem. That means 1 rem is 0.01 sievert. So expressing the conversion as 1 rem = 0.01 Sv is the simplest way to show how a measurement in rem converts to sievert, and it also means 100 rem = 1 Sv.