An electromagnet is a temporary magnet that is made through coiling a wire around an iron core, once current flows in this coil, the iron starts having magnetic properties thus making it a magnet. The current that has been induced forms a consistent magnetic field around the conductor. Due to Len’z Law, the magnetic field [...]
The spiral galaxy that we are on is what is known as the Milky Way. When viewed from above it looks like other spiral galaxies. It has spiral arms and bright middle section. The sun takes 200 millions to go around the galaxy once revolving around it a speed of half a million mile per [...]
Radiation refers to the release of energy from a source. Different forms of radiation react differently on the human body. A number of them are able to change the DNA and result in disease, cancer and sometimes death! Radiation is found in the sky and the earth. An example of radiation is the ultraviolet rays [...]
The word geothermal originates from the Greek words “geo” and “therme”. These words respectively refer to “earth” and “heat” which basically defines geothermal energy. Geothermal energy refers to energy that has been obtained from the earth’s heat, from extensive depths underneath. The earth’s core, where many chemical reactions take place producing heat is approximately 4000 [...]
Hydro Power refers to power that is derived from water sources. A section of the marvel of hydro power is its simplicity. Today about 15 percent of the electricity produced in the world is produced from hydro power. This constitutes about 6 percent of the total energy supply in the world. Instead of making use [...]
In biochemistry, the term DNA refers to a polymer which is long and linear that is located in a cell’s nucleus and that nucleotides form. It has the shape of a double helix. It is linked to the genetic information transmission. DNA stands for deoxyribonucleic acid. To many molecular biologists, the art of DNA is [...]
Fossils are precious gifts coming from the geological past. These signs and ancient remains of living things that are found preserved in the crust of the Earth are referred to us fossils. Fossil is a Latin word which means “dug up”. People think of fossil as animal skeletons or wood and leaves from plants that [...]
Constellations are things which are totally imaginary that have been made up within the past 600 years and even more by poets, astronomers and farmers. The main purpose of the constellation is to let us know which star is which. Trying to know which star is which at a dark night is very difficult since [...]
Theory of relativity is so called due to the fact that a huge part of it states that all things are relative. That the quantifiers used by everybody from day to day are relative. For every individual on the earth, one minute consumes the same amount of time (the truth is that it doesn’t, but [...]
Classification system was developed first by Linnaeus. At first it was made up of two kingdoms, animals and plants. The emerging of microscope was very instrumental in new organisms being discovered and the realization of cell differences. The two kingdom system was then abolished; today the kingdom of classification consists of six kingdoms. The six [...]
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