When placed in boiling water, the materials comprising the thermometer respond in the order in which the heat penetrates them. As the heat first permeates the glass cylinder, the cylinder expands, enlarging the bore. For the moment until the Mercury is also heated, the constant volume of mercury fills the expanded bore to a slightly lower depth. When the heat reaches the mercury and it also expands, its volume to increase, and the liquid depth rises in the bore.
At first only the outer glass of the thermometer gets hot and expands. The Mercury at first does not heat up and so it does not expand. This creates room for the Mercury and it drops down. The reading on the thermometer is only accurate when both the glass and Mercury are at the same temperature.
As soon as you place the thermometer heat from the hot water first comes in contact with the glass surface of the thermometer which will expand resulting in a greater volume of the bore (capillary which holds mercury) and the level of mercury descends at first..As the heat from hot water reaches mercury,it expands too, which is followed by volumetric expansion of mercury, an increase in the level of mercury results.
Because clinical thermometer have a very small range. (20 to 45 degrees Celsius at most) and if placed in boiling water, the water being 100 degrees will cause damage to the thermometer.
it is because it is white
A clinical thermometer is used to measure the body temperature. It is usually placed under the tongue, armpit, or rectum. Under the tongue is normally where it's placed.
Water Temperaure cools
It was discovered with a thermometer placed under the sun rays beyond the red end of the spectrum.
boiling chips are not added to the distillation flask. the thermometer bulb is placed in the boiling liquid. the water to the water-jacketed condenser is not turned on.
Because clinical thermometer have a very small range. (20 to 45 degrees Celsius at most) and if placed in boiling water, the water being 100 degrees will cause damage to the thermometer.
When you steam the lobster, it is placed in a basket above a pot of boiling water. When you are boiling the lobster, it is placed directly into the boiling water.
The liquid in thermometers contracts when placed in something cold (and expands when placed in something hot.)
it is because it is white
An ear thermometer should be placed carefully in an ear to measure the temperature. The temperature is then taken by an infrared mechanism in the thermometer.
A thermostat for heating or a thermometer for air temperature is typically placed on an inside wall (not outside wall), and away from heating vents or direct sunlight.
On a wall that faces north, which is largely in the shade. An outdoor thermometer placed anywhere that sunlight can fall directly on it will be wildly inaccurate.
A clinical thermometer is used to measure the body temperature. It is usually placed under the tongue, armpit, or rectum. Under the tongue is normally where it's placed.
A Thermometer's accuracy can be improved if it is placed in an area where there is not an object that touches it that can influence a temperature shift.
Because it will bust.
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