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Physics Units Converter Calculators

Convert any type of unit into any other of any system or scale


Alternative Energies Tutorials:


Ocean Energy

Wind Energy

Solar Energy



Lean Manufacturing Tutorials:

The Seven Causes of Waste

The 5S

The 5 Why’s

The 4 M’s +1

Cause Effect / Fish Diagram  

The 4W’s +H+W



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Cell Production

Kanban Production System




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Rsistors and capacitors colors code

The Logarithm

The bel, decibel , the dbm and the dbmv

Electrical noise definition and Thermal noise

Signal to noise ratio


Lowest Prices for Solar Cells

Best Solar Energy Books

Lowest price Solar Panels

Wind Turbines and Parts

Best Wind Energy Books

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Patents  Information

Information related to patents registration, issue and advice. If you are looking on how to file a patent or any issue related to it you can check the information in sites in this page.


United States Patent and Trade Office

All information related to patents, trade marks and copy rights

General Information Concerning Patents

How to Get a Patent

Types of Patents

Inventor Resources

All the support and information, requirements and cost to register your patent

USA Govt Patents Database Search Engine

Find patents by field, topic or number since year 1790

USA pending or in process patents registration search engine

This search engine finds what patents are currently in process to be granted

Google Patents Search Engine

Global Patents Search Engine

By patents.com

Free Patents On Line

Search on line all kind of patents

Sumo Brain

Powerful patent search

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