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The meter was defined in 1792 as 1/10,000,000 of the distance between the North Pole and the equator on a line running through Paris, France. The standard length of a meter was later changed to be the distance between two fine lines engraved on a bar of platinum and iridium alloy. The next definition was based on the wavelength of light emitted by an isotope of the element krypton. The present definition, in use since 1983, is the distance light travels in a vacuum during approximately one three hundred millionths of a second (1/299,792,458 sec).
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CoachThe three intermediate definitions of the meter between 1793 and 1983 were the archaic metre (1795), the provisional metre (1799), and the legal metre (1889). These definitions went through various changes and refinements to establish a standard unit of length based on physical constants.
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When installing lights with 2-way and intermediate switching control the intermediate switch must be connected to the?
The intermediate switch must be connected to the traveller wires that come from the 2-way switches. These traveller wires are used to carry the electrical signal between the switches to control the lights.
How can an intermediate switch be used with a 2-way switch system to control a light from four floors?
A two way switch is UK terminology for a North American three way switch. Though the switch has two names it is still a Single Pole Double Throw switch that has three terminals. North American terminology. The circuit is the same as the three way switch system. To control from four locations just add another intermediate switch. For the system to work properly the new intermediate switch has to be adjacent to the existing intermediate switch. The connections must run - three way, intermediate, intermediate, three way.
How would a three phase meter reading compare to three single phase meters connected to the same service?
A three-phase meter measures the total power consumption of all three phases combined, while three single-phase meters measure the power consumption of each phase individually. The total reading on the three single-phase meters should theoretically be equal to the reading on the three-phase meter if there is a balanced load across all three phases. Any imbalance in the load distribution among the phases would result in discrepancies between the readings of the single-phase meters and the three-phase meter.
Parts of a cytoskeleton?
There are three parts.Micro tubules,micro filaments and intermediate filaments are compartments.
What is the most stable microtubules microfilaments or intermediate filaments?
Intermediate filaments are generally considered the most stable among the three cytoskeletal elements (microtubules, microfilaments, and intermediate filaments). They are more resistant to changes in cell structure and provide structural support and stability to the cell.
