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Showing posts from April, 2014

What are neutron stars and can they create black holes?

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Neutron stars are one of the small stars created through particles. Neutron stars are created through gravitational collapsing in which gravity's force overpowers the internal pressure given by the fusion particles in a star this collapses the star creating a dense star, which seems to be the densest star in the universe. This appears to be white in color to the naked eyes of humans. Neutron stars are not able create black due to the neutron degeneracy as they get affected by the thermal effect by which fusion stops at oxygen because of its low mass therefor e cannot create a black hole.

How do black holes form?

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Black holes are basically a region of space time where gravity pulls anything towards the black hole even light can't escape therefore to be able escape it we have to be faster than light. Well lets get to the point, black holes are initially formed through stars which have a mass 5 times more than the sun. New born stars have a core of the particle hydrogen which gets fused with other hydrogen particles creating helium and helium fuse to an other element as they go through the periodic table. This continues till iron becomes the core. Since, iron can't fuse they instead collide with each other and gravity also helps iron particles compress and create a black hole.

Radar-Absorbent-Material

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Radar-Absorbent-Material or RAM is a stealth technology used when radars are used by enemies. This absorbs a particular amount of the frequencies used making it unable to figure out an exact location. However, this cannot make the plane invisible in the radar, as the frequencies differ in each radar and there are no universal absorbent for the RAM. Bad weather also affects RAM. RAM's mainly used type is Iron Paint Ball. This a sphere coated in carbonyl iron or ferrite which induces molecular oscillation in the radar frequency causing heat, later the heat is dissipated.

Atmosphere's of the earth

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Troposphere is the first layer extends to 30,000 feet from the ground. This is layer is where most clouds are located. Stratosphere is the second layer which has no clouds and it also has the ozone layer which extends from the tropopause for 12 km to 170 km. Since the ozone  absorbs UV radiation its temperature is high. Mesosphere is the next  layer extending from 50 km to 80 km this is where meteors burn up and the temperature decreases with higher height.  Thermosphere is the next layer with the higher temperature that can be up to 1500 C this is caused by high density molecules rubbing against each other. This layer extends from 80 km to 350 km till the exobase. Exosphere extends from 350 km to 800 km it usually contains hydrogen and helium in its layer as they are the lightest gas found in the periodic table so they are found exosphere.