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Know your electric appliances: Class II

Know your electric appliances: Class II
A double square of this kind appears in appliances that were designed to isolate voltage sources so theoretically an electric shock is not possible. The insulation may appear in multiple forms to achieve this goal, normally using non-conductive materials like plastics. If the appliance doesn't derive voltage where the user…
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Know your electric appliances: Class I

Know your electric appliances: Class I
The symbol of the image means something really important, as it indicates the necessity of having a three prong electrical system, with earth. Earth means somewhere there is a ground rod —a piece of metal normally with a solid tube geometry— that is buried in the ground, with direct contact…
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What is faster, electricity or light?

What is faster, electricity or light?
Light sets up the maximum available speed with near 300.000 kilometers each second, so electricity must be below this threshold. There are who think that electricity is simply another propagation of electromagnetic energy, so the distinction doesn't really apply, only accounting with the permittivity and permeability of the medium, slowing…
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Is your body a capacitor?

Is your body a capacitor?
Some information may save your life, avoid pain or other issues related to electricity. This energy is clean and very convenient in general but also extremely dangerous so anyone should know how it behaves with the body. Electricity doesn't move without a voltage difference. Ground is zero voltage and everything…
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Unami, the mysterious taste

Unami, the mysterious taste
"Difficult to describe", but there are individuals who consider this taste another of the big ones. In fact, it's a bit contradictory since the other tastes alone are very recognizable. However something looks clear: it should produce signals so there are specific receptors that create them. Probably, there are more…
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Are ESD tools necessary?

The power to destroy!
If electricity is somewhat new, electro-static discharges are still unknown for a lot of individuals, even engineers that work in the field. Multiple myths around there don't help a bit, nonetheless this reality continues here and causing damage to sensitive electronic equipment, producing billions in damage. It makes some areas…
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Electric cars, the new age

Electric cars, the new age
The option was there during so much time but now the benefits are multiplied as the technology evolves. In some places, electric vehicle sales occupy 1/4 of the total. Numbers that a hundred years ago were rare, although the revolution is happening for a reason. Air pollution is a source…
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Protection against ESD

Protection against ESD
Electrostatic discharges are a common source of failures in sensitive equipment. There are however numerous techniques to avoid it like special materials or providing a secure path to electricity to ground instead of allowing it in other locations. Someone might incorrectly believe that every plastic can produce static electricity by…
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How to control the electricity bill?

How to control the electricity bill?
To start, a Sun emits enough energy for several civilizations thus the energy is as free and public as the air. A distribution service for home appliances has a different basis and needs investments both in terms of space, work and materials. Any individual could install a method to acquire…
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Radar image gallery

Radar image gallery
The presence of this energy and how it goes without practically interaction appears to some like magic or a miracle. Produced, sent and taken using the air as a medium allows multiple possibilities for developing technology although there's who states their risk as another type of pollution. It's not also…
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