Astronomers draw an imaginary line from the Earth point E1 to the distant star or an astronomical object point A2 , line E1A2. Half a year later, when the Sun is on the opposite side of the Earth, they draw another imaginary line from the current position of the Earth point E2 to the new apparent position of the distant star point A1 , line E2A1.
They then also connect the two positions of the Earth, making line E1E2. The sun is in the middle of this line, at a point S. The distance from the sun to this point — that is, the line SI, is equal to 1 pc, if the angle formed by the lines A1I and A2I is two arcseconds. Please see the diagram below for better visualization. There, angle P is one arcsecond. A league is an obsolete unit in most countries. It is still in use in some areas, such as Yucatan and rural Mexico.
It is defined as a distance that a person can walk in one hour. A nautical league is defined as three nautical miles, which is about 5. A cubit is a length from the tip of the middle finger to the elbow. This unit was widely used from the Antiquity through to Early Modern Times. A yard is used in the imperial system and it equals three feet or 0. In some countries like Canada, it is only used when measuring fabric, as well as sports grounds, such as swimming pools and cricket pitches.
It was later redefined as a length of a prototype meter bar, created from platinum and iridium alloy. It was further redefined as equal to 1,, Later it was redefined once more using the speed of light. In physics, distance is a scalar value and never negative. It can be measured by an odometer. It must not be confused with displacement, which is a vector that measures a straight line that is the shortest distance between the departure and the arrival points of an object.
Circular distance is a distance travelled by a circular object, such as a wheel. It can be calculated using frequency, or the radius of the wheel. This article was written by Kateryna Yuri. Unit Converter articles were edited and illustrated by Anatoly Zolotkov. Convert lunar distance from the Earth to the Moon to kilometer. Convert millimeter to nanometer.
Converter of Units of Information and Data Storage. Do you have difficulty translating a measurement unit into another language? Help is available! Post your question in TCTerms and you will get an answer from experienced technical translators in minutes. Calculations for the Length and Distance Converter converter are made using the math from unitconversion.
In geometric measurements, length most commonly refers to the longest dimension of an object. For example, it is possible to cut a length of a rope that is shorter than rope thickness.
Several units are used to measure length. In the International System of Units SI , the basic unit of length is the meter , which is defined in terms of the speed of light. There are many other commonly used units of length such as the inch, the foot, the yard, and the mile. This online unit converter allows quick and accurate conversion between many units of measure, from one system to another.
The Unit Conversion page provides a solution for engineers, translators, and for anyone whose activities require working with quantities measured in different units. Learn Technical English with Our Videos! You can use this online converter to convert between several hundred units including metric, British and American in 76 categories, or several thousand pairs including acceleration, area, electrical, energy, force, length, light, mass, mass flow, density, specific volume, power, pressure, stress, temperature, time, torque, velocity, viscosity, volume and capacity, volume flow, and more.
Note: Integers numbers without a decimal period or exponent notation are considered accurate up to 15 digits and the maximum number of digits after the decimal point is In this calculator, E notation is used to represent numbers that are too small or too large. E-notation is commonly used in calculators and by scientists, mathematicians and engineers.
We work hard to ensure that the results presented by TranslatorsCafe. However, we do not guarantee that our converters and calculators are free of errors. Terms and Conditions. If you have noticed an error in the text or calculations, or you need another converter, which you did not find here, please let us know! Mobile View. Alexa Rank. Convert meter m versus angstroms angstrom-unit in swapped opposite direction from angstroms to meters. Or use utilized converter page with the length or distance multi-units converter.
Technical units conversion tool for length or distance measures. Exchange reading in meters unit m into angstroms unit angstrom-unit as in an equivalent measurement result two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied.
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