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Why does wrapping cotton wool around a thermometer cause the temperature to drop?
Wiki User
∙ 11y ago
it only does when it is wet
Wiki User
∙ 11y ago
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Do you measure air temperature in shade or in sunlight?
Air temperature should be measured in the shade. Sunlight falling on the instrument, the thermometer, will heat up the temperature receptor through radiation, causing the reading to be incorrectly high. For greater accuracy, place thermometer inside a box-like device called a Stevenson screen. Its purpose is to provide a standardized environment in which to measure temperature, humidity, dewpoint and atmospheric pressure. This product works by preventing sunlight from hitting the receptor on the thermometer, but it still allows air to circulate in and out. This device is also known as a cotton region shelter, an instrument shelter, a thermometer shelter, a thermo-screen or a thermometer screen.
What are the features of the stevenson screen?
Instruments which are used to measure temperature and Humidity should be kept inside "stevenson screen". Its a wooden box to shade from direct sunlight, Its painted white to reflect sunlight, It has vents to allow free flow of air. The stevenson screen should be located away from trees and buildings which could affect the temperature!
What temperature will clothes catch on fire?
oil cotton - 120 C cotton cloth - 210 C
What is organic cotton made from?
COTTON is a plant , organic cotton is made of COTTON!
What is fairtrade cotton?
fairtrade cotton is cotton that a lot of people have worked to get to you
What would thermometer read if put out window of car at highway speed assuming temperature is around -10C?
It would read -10C.Moist human skin, or a thermometer with damp cotton around it, are cooled by wind.But wind doesn't cool a DRY surface below the actual temperature.
Is cotton unacceptable for wrapping packages for autoclaving?
it is unacceptable
Do you measure air temperature in shade or in sunlight?
Air temperature should be measured in the shade. Sunlight falling on the instrument, the thermometer, will heat up the temperature receptor through radiation, causing the reading to be incorrectly high. For greater accuracy, place thermometer inside a box-like device called a Stevenson screen. Its purpose is to provide a standardized environment in which to measure temperature, humidity, dewpoint and atmospheric pressure. This product works by preventing sunlight from hitting the receptor on the thermometer, but it still allows air to circulate in and out. This device is also known as a cotton region shelter, an instrument shelter, a thermometer shelter, a thermo-screen or a thermometer screen.
At what temperature does cotton burn?
Cotton is a type of fabric. The temperature at which cotton burns at is 210 degrees Celsius or 410 degrees Fahrenheit.
How does a vertinary dr find out temperature of animals?
A half minute short bulbed clinical thermometer is necessary. See that the mercury is completely shaken down to 9O°F or so.The bulb of the thermometer should be lightly greased with Vaseline then gently inserted into the rectum at about two inches. An agitated dog can be held by an assistant.Keep the instrument in position for a full minute, remove, wipe with cotton wool dipped in antiseptic, and look at the level.
Did the Egyptians mummify their dead?
Yes they did they would put cotton tape around them then they would put them in a coffin.=======================================The process of mummification as practiced by the ancient Egyptians involved drying out the corpse using a natural salt called 'natron'. they did this before wrapping them in cotton and placing them in their sarcophagus (coffins)
How do you use a wet bulb thermometer and a dry bulb thermometer?
as the air passes over the wet bulb thermometer the water in the cloth evaporates. as the water evaporates the cloth cools. if the humidity is low the water will evaporate more quickly and the temperature reading on the wet bulb thermometer will drop. if the humidity is high only a little bit of water will evaporate from the cloth of the wet bulb thermometer and the change in temperature will be small.
What fabric was used in mummification?
Cotton wrapping, just like we wrap a sprained arm today, but doing the full body.
What is the glass transition temperature of cotton?
It doesn't have
What are the features of the stevenson screen?
Instruments which are used to measure temperature and Humidity should be kept inside "stevenson screen". Its a wooden box to shade from direct sunlight, Its painted white to reflect sunlight, It has vents to allow free flow of air. The stevenson screen should be located away from trees and buildings which could affect the temperature!
Why is cotton easy to clean?
Cotton is easy to clean because the cotton can be washed at any temperature safely. Cotton does not get damaged in hot water like other fabrics can.
What temperature does cotton grow in?
Cotton grows mainly in warm places admit likes warm soil
