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Until recently, the meter was defined as 1,650,763.73 wavelengths of orange-red light emitted from a krypton-86 lamp. However, in October 1983, the meter was redefined as follows: One meter --> The distance traveled by light in a vacuum during a time of 1/299,792,458 of a second.
Wierd, huh?
http://demo1.physics.wisc.edu/MDemos/Writeups/M1StMeter.htm
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∙ 14y ago
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∙ 12y agoIn science, measurement is the process of obtaining the magnitude of a quantity, such as length or mass, relative to a unit of measurement, such as a meter or a kilogram. A measurement answers the general question, "how many?", as in how manymiles, or millimeters, or gigahertz. As measurement is basically about counting, measurement is conducted in numbers and is quantitative, in comparison to other observations which may be made in words and are qualitative. The term measurement can also be used to refer to a specific result obtained from the measurement process.
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∙ 12y ago"the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second" http://en.wikipedia.org/wiki/Si_units http://en.wikipedia.org/wiki/Meter
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∙ 14y agoThe meter is defined as the distance light travels in vacuum over the time interval 1/c ≈ 3.34 nanoseconds.
Wiki User
∙ 12y agoThe meter is now defined as 1/299,792,458 of the distance
that light travels in one second in vacuum.
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The meter is defined as the what traveled by what in absolute vacuum in 1299792458 of a second?
The meter is defined as the distance traveled by ? in absolute vacuum in 1299792458 of a second.
Standard unit in SI for length?
The meter, also spelled metre.The meter, also spelled metre.The meter, also spelled metre.The meter, also spelled metre.
Why is it necessary to standardize a pH meter?
A pH meter must be standardized because it measures relative potentials and thus relative pH. It is necessary to know to what the measurement is relative. A standard must be measured and the meter set to the known value for this standard. The pH values of other solutions are then measured relative to this standard.
How many fl oz in two cups?
A standard cup is defined as containing six fluid ounces of liquid. If actually intending to mean a glass, a standard glass is defined as eight fluid ounces.
What is a derived untit?
It means that it is defined on the basis of other units. For example, in the SI, the meter and the second are two of the seven "base units"; the unit for area is the square meter (meter x meter), so it is a DERIVED unit; so is the unit for speed, meters / second.
How was lenght of a standard meter defined in the year 1791?
by the demension of the planet earth
Is there a standard for the Newton?
No, there is no standard Newton in a cabinet somewhere. The Newton is defined using the standards for the meter, kilogram and second.
How is a meter and other variable are defined today?
1 meter is one forty-millionth of the polar circumference of Earth.
What is the meter defined by?
the meter is defined as the basic unit of the metric unit.
What is the standard metric unit for weigt is?
Weight is a force. The standard metric unit of force is the Newton, defined as one kilogram-meter per second squared.
How was meter first defined?
the meter is defined as distance that travels 1/299792458
Unit of measurement uniformily used by everyone?
A standard measurement is one that is accepted and used by everyone. If the measurement can be compared to some standard, which does not changes, then it can be universally used. One example is a unit of time such as seconds, minutes, hours, days, years. The meter has a standard, and the foot and inch are defined in reference to the meter.
How was the length of a standard meter defined in the year 1791?
In the 18th century it was felt that a standard unit of length was needed. The French Academy of Sciences decided in 1791 that the meter would be defined by the dimensions of the planet earth. The metre would be a unit of length such that Earth's meridian line (a line linking the equator with the north pole) was equal to ten million meters. Over the following years measurements of the meridian line that passes through Paris were attempted, so that a standard meter could be cast in metal.
What is the standard length of a meter?
kength of a meter
How did typewriters contribute to computers?
Typewriters gave way to word processors and defined the keyboard standard we take granted for today.
The meter is defined as?
A meter is currently defined as the length of the path travelled by light in vacuum during a time interval of 1 / 299,792,458 of a second.
What is the standard unit of SI length?
he standard unit of length in the metric system is the meter
