Who was Celsius named after?
Anders Celsius
Why is alcohol safer than mercury?
Advantages. It is suitable to measure low temperatures because of its freezing point is low. It is less toxic than mercury thermometer and hence high on safety factor for human and environment. It has a greater value of temperature coefficient of expansion than a mercury thermometer.
What expands more alcohol or mercury?
Alcohol expands more than mercury because of its low density and volatile nature. Mercury thermometers have the advantage of being small and compact due to its low expansion. Alcohol thermometers can only be used to measure temperatures up to 780C while mercury thermometer can be used to measure up to 3570C.
Why has mercury been replaced by alcohol in a thermometer?
There is a technical reason for using mercury in clinical thermometers. Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings with mercury.
Why do Mountaineers use alcohol thermometer?
Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C.
What’s the difference between alcohol and mercury thermometer?
Alcohol thermometer and mercury thermometer are two types of thermometers which are composed of a bulb and a marked glass tube. The main difference between alcohol and mercury thermometer is that the bulb of mercury thermometer is filled with mercury whereas the bulb of alcohol thermometer is filled with an alcohol.
Who invented the alcohol thermometer?
Daniel Gabriel Fahrenheit
What are the disadvantages of alcohol thermometer?
A thermometer comparison
| advantages | disadvantages |
|---|---|
| Alcohol thermometer (compared to a mercury thermometer) | |
| lower freezing point (-114 C) | less durable (alcohol evaporates) |
| larger coefficient of expansion | alcohol can polymerise |
| less hazardous | fluid loss by evaporation hard to avoid |