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Although white dwarfs are known with estimated masses as low as 0.17 and as high as 1.33 solar masses, the mass distribution is strongly peaked at 0.6 solar mass, and the majority lie between 0.5 to 0.7 solar mass. The estimated radii of observed white dwarfs, however, are typically between 0.008 and 0.02 times the [...]

Ionograms Ionograms show the virtual heights and critical frequencies of the ionospheric layers and which are measured by an ionosonde. An ionosonde sweeps a range of frequencies, usually from 0.1 to 30& MHz, transmitting at vertical incidence to the ionosphere. As the frequency increases, each wave is refracted less by the ionization in the layer, [...]

Solar Power Information

The Sun is a G-type main sequence star comprising about 99.8632% of the total mass of the Solar System. It is a near-perfect sphere, with an oblateness estimated at about 9 millionths, which means that its polar diameter differs from its equatorial diameter by only 10& km (6& mi). As the Sun exists in a [...]

How Solar Power Works

Atmospheric electricity abounds in the environment; some traces of it are found less than four feet from the surface of the earth, but on attaining greater height it becomes more apparent. The main concept is that the air above the surface of the earth is usually, during fine weather, positively electrified, or at least that [...]

Season One #Other Voices: Examines groundbreaking experiments that show the possibility that plants respond to people’s thoughts. #Strange Visitors: Was Oracle Chamber, which lies beneath New Hampshire’s Mystery Hill, built by ancient Phoenicians who traveled to the continent thousands of years ago? #Ancient Aviators: Are there signs of alien visitation here on earth? Might the [...]

public broadcasting system solar energy

Nikola Tesla, mad scientist or forgotten genius? Born in Croatia in the 1800?s to Serbian immigrant parents, Tesla has directly influenced our modern world in ways that affect our everyday lives. Able to speak 6 languages before he was 18 years old, Nikola Tesla has been touted as one of the greatest geniuses of the 20th century, credited with invention of alternating current (AC Power), radio, Radar, remote control, robotics and the fluorescent lights and nearly 700 other patents. Unfortunately Tesla also had the reputation of a mad scientist due to eccentric behaviour and over exaggerated announcements.

Electric car motors

In an era where gas prices at the pump spiking as high as we have seen lately, a low- carbon car that shatters preconceived notions of electric vehicles â?? may be the solution. Tesla Motors seemed to be working on this dream for many years â?? a quixotic dream.

Electric Energy

Electric cars consume less expensive energy. Driving costs are lower. However, electric cars are responsible for emitting more carbon dioxide and more pollutants when electricity is generated from coal. They have shorter driving ranges and need long times for recharging. They are also more expensive. A car driving 25 miles on a gallon of gasoline must pay $16 at the pump versus an electric car, which pays only $5.28 to the utility.

Solar Energy Works

Many people are looking for financial relief, especially in these economic turmoils of today. Saving money on your electrical bill would be a good step to have some more money in your pocket for other necessities in life. To build your own solar panel you do not have to be a technical genius or have an expensive installation technician come by to do the work for you at a high rate per hour.