THE VACUM FLASK=
THE VACUUM FLASK IS A CONTANIER WHICH CAN KEEP HOT
THING HOT COOL THING COOL THINGS COOL THE VACUUM FLASK REDUCE THE
RATE OF TRANSFER OF HEAT BY ALL THE THREE WAYS ie
CONDUCTION,CONVECTION,AND RADIATION
THE VACUUM FLASK IS ACTUALLY TWO THIN GLASS OR METALS BOTTLES ONE
INSIDE THE OTHER AIR BETWEEN THE GLASS WAS REMOVED TO CREATE
VACUUM .THE VACUUM PREVENT THE TRANSFER OF HEAT BY CONDUCTION
,CONVECTION
WRITE BY=MUHAMMAD HAMZA HASAN
