HELLO COWS :D

LET US BE THINKERS!

the thermal flask is a EXTRAORDINARY invention it uses almost all of the thermal physics knowledge to prevent heat from escaping.DO YOU KNOW WHY thermal flasks with glass coating works better than the ones without?

TELL ME WAEEEEEEE

now,imagine if you're a SPYYYYY, and your only tool at the moment is a glass cup (budget case:D) now you're suppose to eavesdrop on someone in the next room.would it be better to listen with a cup filled with water since the particles will be denser or just an empty cup?

TELL ME WHYYYYY :D