If you hold the bulb end, the thermometer will measure YOUR temperature instead of the temperature of the medium that you wish to measure.
Holding the thermometer by its bulb can transfer heat from your hand to the bulb, affecting the temperature reading. This can lead to inaccurate results. It's best to hold the thermometer at the opposite end to prevent any interference with the measurement.
Thermometer
Rear end of what?
An ideal thermometer usually has a thin glass tube with a uniform bore, capped at one end with a bulb containing a temperature-sensitive liquid like mercury or alcohol. The tube should have uniform markings along its length for accurate temperature reading. The thin design allows the liquid to expand and contract easily as the temperature changes.
Thermometer. They contain Mercury which is a metal.
Bulb is a noun. Example sentences: I want to find an LED bulb to replace the incandescent bulb that burned out. The thermometer was made of glass, with a bulb at the end.
It is a glass thermometer.
It is a glass thermometer.
In a liquid thermometer the liquid will retreat towards the reservoir bulb at the end of the thermometer. In other types of thermometers - digital, dial, etc. - decreasing values of the reading are an indication that temperature is dropping.
The capillary tube is the hollow opening inside the thermometer that the liquid rises or lowers in so that you can read the temperature. The bulb is the bottom portion that holds the liquid and the part you use for contact to get a temperature reading. Calvin B.
It is a thermometer, used for recording temperature.