Thermometer:
A thermometer is a device that measure the temperature in the atmosphere. it uses a temperature sensor to read the data of the atmosphere. There are two different types of thermometers: primary and secondary. Secondary are more widely used for it is more convenient. It is also more sensitive compared to the primary temperature. Because of the sensitivity it can give off more accurate data than the primary does. Thermometers are measure in units called Fahrenheit or Celsius. Depending on what part of the world you are in varies on what unit is used. For more information on thermometers click read more
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Anemometer:An Anemometer is a device that measures wind speed. It can be divided into two groups: one that measures velocity and one that measures the winds pressure. There are six different types of Anemometer which include: Cup Anemometer, windmill, hot wire, Laser Doppler, sonic, and Ping Pong anemometer. The basic Cup Anemometer uses four cups that rotate. Counting the time the cups rotate can calculate what the wind speed is. The device was a cup anemometer which was created in 1846. This anemometer was created by John Thomas Romney Robinson. It is expressed in many different units which include: ft/min, Km/h, mph, or Knots. To learn more about Anemometers click Read More
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Barometer:A Barometer is a device that measure air pressure, or atmospheric pressure. It was created in 1643 by Evangelista Torricelli. There are three different types of barometers. These include Water based, Mercury, and Aneroid. The aneroid is most common used, it measure the air pressure by a small flimsy metal boxed called an aneroid cell. When the air pressure changes the cell expands and contracts. Which is then shown on the face of the device. it is measure in millimeters To learn more click Read More
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Hydrometer:
A hydrometer is a device that measure relative density. That is the ratio of density of liquid to density of water. It is made up of glass and has a cylindrical system. It is weighted with mercury or lead. This is to ensure that it floats the right direction. You then pour the liquid you are measuring into the cylinder. The device is then lowered into the liquid and as soon as it touches it the results are shown. There is only one type of hydrometer. For more information on hydrometers click Read More Picture from: http://www.icllabs.com/Safety%20Blue%20API%20hydro.JPG
Psychrometer:
A psychrometer is a device that measures relative humidity. It is also known as a hygrometer. The most common psychrometer is tghe sling hygrometer which is a device with two tempurature bulbs o each side. one side however is covered in gauze. You wet the strip of gauze and swing the hygrometer for thirty seconds. You then subtract the difference of the two sides: wet and dry, and that will give you the relative humidity. The units it is measured in is percentage. For more information click Read MorePicture From: http://upload.wikimedia.org/wikipedia/commons/0/09/Sling_psychrometer.JPG
Rain Gauge:
A rain gauge is a device that scientist use to measure the amount of precipitation there is over a period of time. You may also recognize a rain gauge by standard rain gauge, weighing precipitation gauge, tipping bucket gauge, or optical rain gauge. These are the other names that it can be referred to.The first recorded information of collecting rain fall was about 2,000 years ago in 500 B.C. The first actual rain gauge was created in Kore by Jung Yeong-sil. he called this Cheugugi. most rain gauges measure the precipitation in milliliters. For more information on Rain Gauges click Read MorePicture From: http://www.compleatnaturalist.com/images/Prof%20Rain%20Gauge.jpg
