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Dual nature of light

Light has intrigued humankind for centuries. The most ancient theories considered light as something emitted by the human eye. Later on, it was understood that light should come from the… Read more

Mar 24, 2011 | Lighting

Dual nature of light

Colour classification and temperature

Colour is a subjective psycho physiologic interpretation of the visible electromagnetic spectrum. Luminous sensations or images, produced in our retina, are sent to the brain and interpreted as a set… Read more

Mar 22, 2011 | Lighting

Colour classification according to the C.I.E. chromatic diagram

Protective Grounding Requirements

Each region shall implement procedures to ensure the adequacy of protective grounds and shall periodically review grounding practices at each facility to determine the proper size, length, and number (if… Read more

Mar 19, 2011 | Energy and Power

Personal Protective Ground Cable Assembly

Please, help brave Japan people!

As you already know, Japan is suffering from the greatest disaster since world war 2. A tremendous earthquake, a huge tsunami and now radiation leaks have caused untold damage in… Read more

Mar 18, 2011 | Environment

Please help Japan people

Current transformers (CTs) in a few words

A current transformer is defined as as an instrument transformer in which the secondary current is substantially proportional to the primary current (under normal conditions of operation) and differs in… Read more

Mar 18, 2011 | Transformers

Cross-sectional view of the panel and multifunctional CT

Surge protection of cells and inverter – DC side

Providing power with photovoltaic solar panels is tremendously interesting in the context of renewable energy sources, as regards economical LV photovoltaic systems connected to the public electricity network. Because of… Read more

Mar 17, 2011 | Low Voltage

Surge protection of cells and inverter - DC side

Benefits of biomass energy

Biomass in the form of fuelwood was perhaps the first energy source used by human beings and was the main fuel till the industrial revolution, after which fossil fuels like… Read more

Mar 16, 2011 | Biomass Energy

Benefits of biomass energy

Induction machines – historical touch

Faraday discovered the electromagnetic induction law around 1831 and Maxwell formulated the laws of electricity (or Maxwell’s equations) around 1860. The knowledge was ripe for the invention of the induction… Read more

Mar 15, 2011 | Electric Motor

Induction machines


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