for now how is the tempherature
pickaxes
wall sockets
by hand
then rope or nothing
for now how is the tempherature
termometer
Termometer
why can't we use laboratary termometer to measure human body temprature
TERMOMETER
how did people managed before they have television
They didn't. You can't use something BEFORE it is invented.
The Abacus
Their hands.
Before the steam engine.... "people power" and "animal power."
carriages
when did people use indoor gas lights