Question

please send the answer with proper explanation​

Answer 1

Answer:

R E F R A C T O R

MY PLEASURE

Answer 2

Answer:

reflector

Explanation:

Cold welding was first recognized as a general materials phenomenon in the 1940s. It was then discovered that two clean, flat surfaces of similar metal would strongly adhere if brought into contact under vacuum. Newly discovered micro- and nano-scale cold welding has already shown great potential in the latest nanofabrication processes.