By: Matt Bird
The concept of the solar cell is one fairly easy to grasp just by reading the name: it's a device that takes in and stores energy transmitted by the sun. Solar power is becoming more and more popular as a replacement for fossil fuel energy...
By: David Braybrooke
An electronic depth sounder is an invaluable aid in determining the depth of the water underneath any particular vessel or watercraft. It may also help to measure the distance of water between the bottom of a boat and a submerged object further beneath, thus helping...
By: John Traveler
RADAR is an acronym which stands for Radio Detection And Ranging. Several developments with respect to vacuum tube technology led up to the first practical application of radar in World War Two and it played a key role in the Battle of Briton. In contrast...
By: Janet Grischy
Bats do not actually navigate with radar. They use sonar, Sound Navigation and Ranging, to find their way. Radar uses radio waves, for Radio Detection and Ranging, or more precisely microwaves, long radio waves, to do its work. However, the sonar that lets bats fly...
By: Dr Pandula Siribaddana
Radar is a technology, which revolutionized modern warfare, and it was in the early 1930s when the first radar was used. Although the principle of radar was known many decades before its first use, the technology did not expand until the military leaders recognized its...
'Singularity' movement seeks human immortality
By: Gene Patterson
Do you want to live forever? Does the concept of human immortality seem absurd? Perhaps you should rethink the absurdities of possibly living forever. many scientists believe we are coming close to reaching the, "Singularity". when this happens a rapid expansion of technologies will occur...
By: Jon Dainty Sr.
People continue to demonstrate the desire to communicate, and ham radio fulfills this need admirably. There are many radio services, most of them requiring licensure before you can legally talk, text, or type to others, some of them even requiring membership in military or public...
By: Terrence Aym
During the first decade of the 21st Century the drive to achieve human immortality has picked up steam.Some see the achievement of immortality by 2050 at the latest. A number of ideas now exist concerning bridging the gap between a finite lifespan and one...
The origin of the compass
By: Daniel Cloud
The compass has been proven to stand the test of time as a simple instrument with amazing value. The origin of the compass is ancient China, first created during the Qin dynasty of 221-206 B.C. While modern technology, particularly GPS, has made the necessity...
A history of gunpowder
By: Daniel Cloud
The origin of gunpowder and its history is quite complex. Gun powder or black powder was given its name in the 19th century. Black powder consisted of three elements. A nitrate, usually potassium nitrate, was used to supply oxygen for the chemical reaction. Charcoal provided...

 

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