
Basic properties of tuning forks A tuning fork is a “U”-shaped metal device that vibrate…
View more1. Basic principle of light refraction When light enters from one medium into another, the propagati…
View morePrinciple: Refractometer is an instrument used to measure the concentration of liquids. Its principl…
View moreZHAO has 25 years of experience in R&D and production of core sensor technologies. It provides c…
View more