Question

আদ্রতা পরিমাপ করার যন্ত্রের নাম কি?
a)ব্যারোমিটার
b)হাইগ্ৰমিটার
c)হাইড্রমিটার
d)থার্মোমিটার

Answer 1

Hygrometers: A hygrometer is an instrument that is used to measure relative humidity on the basis of the concept that the variation in length of a strand of human hair with humidity.

The length variation of a properly treated hair is pronounced when the humidity changes take place 0%–100%.

The hair hygrometer is considered to be a preferable, accurate and satisfactory instrument in situations where extreme and very low humidifies are seldom.

A good hair hygrometer can indicate 90% of a sudden change in humidity within a very short time.