Roentgen ray and Refractometry

Roentgen ray noun - Electromagnetic radiation of short wavelength produced when high-speed electrons strike a solid target.

Refractometry and roentgen ray are semantically related. in picture of inside a body topic. In some cases you can use "Refractometry" instead a noun phrase "Roentgen ray".

Roentgen ray and refractometry are semantically related. Sometimes you can replace phrase "Roentgen ray" with "Refractometry", this terms are similar.