All metals expand when heated and contract when cooled. It is important, therefore, that the standard metre is kept at some constant temperature. That constant temperature could be any temperature but the triple point of water is a convenient benchmark.
Meter Standard meter is the bar of an alloy of platinum and iridium kept under controlled conditions at the " International Sureau of Weights and Measures" near paris.
Diameter is measured linearly so officially, it would be meters. However any unit derived from the meter (cm, mm, etc.) would also be acceptable. New: Let's start off with the smallest practical metric unit of length, the millimerte (mm).One inch contains 25.4 mm.10 mm is equal to one centimetre (cm) or 2.54 inches100 cm is equal to one metre (m) or 1.09 yards1000 m is equal to one kilometre (km) or 0.62 miles
French scientists initially used the Earth itself as the basis for determining the length of a meter. In 1791, they defined the meter as one ten-millionth of the distance from the equator to the North Pole along a meridian passing through Paris. This definition tied the meter to the Earth's dimensions. To physically represent this length, they created a platinum prototype meter bar in 1799, known as the "mètre des Archives", which became the standard for the meter. This definition was later replaced in 1889 by a new standard: a meter was defined as the distance between two marks on a platinum-iridium bar kept at the International Bureau of Weights and Measures (BIPM) in Sèvres, France. Eventually, the definition evolved further, tying the meter to the speed of light in 1983, making it a fundamental constant of nature.
The international standard for a liter is kept in Paris, France.
Length . . . meterMass . . . kilogramTime . . . secondElectric current . . . ampereThermodynamic temperature . . . kelvinAmount of substance . . . moleLuminous intensity . . . CandelaAll the other units are derived from these.According to Halliday and Resnick ("Fundamentals of Physics", Wiley, 1974, p.8) "Three different systems of units are most commonly used in science and engineering. They are the meter-kilogram-second or mks system, the Gaussian system in which the fundamental mechanical units are the centimeter, the gram, and the second (a cgs system), and the British engineering system (a foot-pound-second or fps system).According to Masterton and Slowinski ("Chemical Principles", WB Saunders Company, 1973, pp. 4-5) "The unit of mass used most frequently in chemistry is the gram, which represents one thousanth of the mass of a platinum-iridium block kept at the International Bureau of Weights and Measures (1 kg = 103 g)."So unless you are talking about a system of units, the unit of mass is the gram.Length; millimetre (mm), centimetre (cm), metre (m)1 metre = 3.28 feet
The water part will turn into ice.
No change will happen. Rajeev jha (delhi)
As long as the standard was a physical object, it was kept in Paris. But the meter is now defined in terms of the speed of light, so it can be reproduced to any arbitrary degree of precision in any sufficiently well-equipped laboratory, and no longer needs to be kept anywhere.
Meter Standard meter is the bar of an alloy of platinum and iridium kept under controlled conditions at the " International Sureau of Weights and Measures" near paris.
Serratia marcescens grows best at temperatures between 25-35 degrees Celsius, with an optimum temperature around 30 degrees Celsius. Below 10 degrees Celsius, growth is significantly reduced, and above 40 degrees Celsius, growth may be inhibited.
37 degrees Celsius
a wind meter and a rainfall meter
At about -7 degrees celsius.
Its kept in a museum in Paris, inside a glass case with the temperature inside the case kept the constant.
Vitamin C is the most unstable vitamin which can be easily denatured. It should be kept at under 70 degree Celsius to avoid damage caused by the heat.
The temperature in degrees Fahrenheit of a freezer kept at -20 degrees Celsius would be -4 degrees Fahrenheit. This can be calculated by using the formula: °F = (°C x 1.8) + 32. So, (-20°C x 1.8) + 32 = -4°F.
You can control the temperature in your refrigerator. Generally the refrigerator is kept at 4 C .