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There is no object that is simply called "delta". On the other hand, there are several that have delta as part of their name, usually followed by the constellation, e.g. delta orionis, delta canis maioris, etc.

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14y ago

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How do you install an earthing system for telecom?

make separate earth pits far from the electrical system earth pits and test to have low resistivity then connect the system or tower.


Why neutral is not requied in 3 phase?

As far as I understand, you don't need neutral line for connecting appliances that is 3-phase compilant. You only need the neutral line to connect a single phase appliance, which you connect along with one of the three lines.


How far - honestly - will a 200mw laser go?

As far as your eyes can see...


What are the three main problems that traveling from Earth to Mars must overcome?

1. Lack of gravity - no gravity caused bone loss and other changes in the human body. 2. Radiation - deadly radiation from the sun and cosmic rays can damage human tissue or even kill astronauts if they get overexposure to radiation for which there is little or no protection in outer space. 3. Isolation - no one has been that far from Earth before and little is known about the long term effects of being cut off from Earth and other humans.


How do you levitate a substance using earths magnetic field?

You can't make a magnet with only one pole. Every magnet, whether natural or electro- , has two opposite poles. One pole is attracted to Earth's north magnetic pole and repelled by Earth's south magnetic pole. The other one is attracted to Earth's south magnetic pole and repelled by Earth's north magnetic pole. For the same reason, there's no such thing as "repel Earth's magnetic field" because Earth itself is a giant magnet, and also has two poles. One of them attracts one end of any magnet, and the other one repels one end of any magnet. Make any electromagnet you like, and figure out a way to hang it up and let it turn freely. It'll line up with its ends pointing to the Earth's north and south magnetic poles.