Mercury is poisonous.
You need a thermometer.
German physicist Daniel gabriel Fahrenheit invented the mercury-in-glass thermometer
The red liquid in a thermometer is Mercury, which is usually encased in a glass tube
Thermometer
thermometer
what do they use for the liquid in glass ball thermometer
thermometer
A thermometer used to measure air temperature uses a glass tube filled with a liquid either alcohol or mercury. When the temperature increases the particles of liquid expand, filling the glass tub. Thermometers that are used to measure you body temperature uses infrared sensors.
Because the pressure of air may be greater than the pressure of the ascending mercury.
Because the pressure of air may be greater than the pressure of the ascending Mercury.
Mercury is poisonous.
Well it won't work below freezing.
A so-called "glass" thermometer has a small bore-hole in the center of the glass that has some liquid in it. It's the activity of the liquid in the narrow hole that makes the thermometer a thermometer.
The capillary tube of the thermometer ( in case of a mecury thermometer).
-- Bring thermometer into room. -- Wave it around in the air of the room for a minute or two. -- Do not hold the thermometer in your hand or breathe on it. -- Wait a while for the room temperature to get through the thermometer glass. -- Look through the glass at the sliver of liquid inside the thermometer. Find the end of the liquid, and see what number is marked on the glass at the same level. That number is your room temperature.
a thermometer