- Length
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Wikipedia-এ সব দেখুনThe metre (or meter in US spelling; symbol: m) is the base unit of length in the International System of Units (SI). Since 2019, the metre has been defined as the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second, where the second is defined by a hyperfine … আরও দেখুন
Metre is the standard spelling of the metric unit for length in nearly all English-speaking nations, the exceptions being the United States … আরও দেখুন
Universal measure: the metre linked to the figure of the Earth
Galileo discovered gravitational acceleration to … আরও দেখুনSI prefixes can be used to denote decimal multiples and submultiples of the metre, as shown in the table below. Long distances are usually expressed in km, astronomical units (149.6 … আরও দেখুন
• ISO 1 – standard reference temperature for length measurements
• Metric prefix
• Vertical position আরও দেখুনThe etymological roots of metre can be traced to the Greek verb μετρέω (metreo) ((I) measure, count or compare) and noun μέτρον (metron) (a measure), which were used for … আরও দেখুন
In France, the metre was adopted as an exclusive measure in 1801 under the Consulate. This continued under the First French Empire until … আরও দেখুন
Within this table, "inch" and "yard" mean "international inch" and "international yard" respectively, though approximate conversions in the left column hold for both … আরও দেখুন
CC-BY-SA লাইসেন্সের অধীনস্থ উইকিপিডিয়া টেক্সট ওয়েব12 এপ্রিল, 2024 · Metre (m), in measurement, fundamental unit of length in the metric system and in the International Systems of Units (SI). It is equal to approximately …
ওয়েবA metre (US spelling, meter) is the basic unit of length in the SI measurement system. The symbol for the metre is m. The first meaning (in the French Revolution) was one …
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The krypton-86 discharge lamp operating at the triple point of nitrogen (63.14 K, −210.01 °C) was the state-of-the-art light source for interferometry in 1960, but it was soon to be superseded by a new invention: the laser, of which the first working version was constructed in the same year as the redefinition of the metre. Laser light is usually highly monochromatic, and is also coherent (all th…
Wikipedia · CC-BY-SA লাইসেন্সের অধীনস্থ টেক্সট- Estimated Reading Time: 12 মিনিট
ওয়েবThe meter is a fundamental unit of length in the International System of Units (SI). Since 1983, it has been defined as the distance traveled by light in a vacuum during a …
- metre - BIPM
ওয়েবThe metre, symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299 792 458 when expressed in the unit m s–1, where the second is defined in …
Define, Conversion, Symbol, How to Measure in Meters, Examples
ওয়েবMeters is the standard unit of measurement of length in the metric system. Meters can be converted into other units easily. For example, length of a rope is measured in meters.
SI Units – Length | NIST - National Institute of …
ওয়েব12 এপ্রিল, 2010 · unit of area is the square meter (m 2 ). unit of volume is the cubic meter (m 3 ). The liter (1 cubic decimeter), although not an SI unit, is accepted for use with the SI and is commonly used …
ওয়েব9 মে, 2019 · The unit of mass (or more practically, weight), the kilogram, would be the weight of a liter of distilled water in vacuum (completely empty space). In 1792, astronomers Pierre Méchain and Jean-Baptiste …
ওয়েব21 মে, 2024 · Metric system, international decimal system of weights and measures, based on the meter for length and the kilogram for mass, that was adopted in France …
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