Magnetic field doesnot have a half life. Elements have half life.
Earth's magnet field shields humans from dangerous radiation form the sun and protects the earth's atmosphere form the solar wind. Without the magnetic field, there would be no human life on earth.
effects of earth's magnetic field:-The sun emits huge amount of solid charged particles every time(called solar wind). if these particles are allowed to enter our earth, then there would be no chance of existence of life as this horrible effect of the solar wind would scrape away the atmosphere of our earth. but this magnetic field of our earth repels all these solid particles from the sun. by K. Sreramfrom India ,Tamil Nadu, Chennai
In order for earth to sustain life it has the magnetic field, plate tectonics, and active volcanoes.
The magnetic field of planet Earth is very important for sustaining life. The magnetic field creates a magnetic map around the world, which birds use to navigate. Also do they create the magnetic north and south pole. But the most crucial thing about our magnetic field is that it protects our atmosphere from solar activity, otherwise our atmosphere would be blown away by solar wind and everything on this planet would die. This happened to Mars, which had oceans and rivers and an atmosphere billions of years ago, but when it's core dried up, it lost it's magnetic field by which the atmosphere was vulnerable and blown away. Causing the planet too become freezing cold and all water to vanish.
effects of earth's magnetic field:-The sun emits huge amount of solid charged particles every time(called solar wind). if these particles are allowed to enter our earth, then there would be no chance of existence of life as this horrible effect of the solar wind would scrape away the atmosphere of our earth. but this magnetic field of our earth repels all these solid particles from the sun. by K. Sreramfrom India ,Tamil Nadu, Chennai
bob
The earth's magnetic field is important in that it prevents the sun's solar radiation from killing life on earth by wiping out the earth's atmosphere and deflecting dangerous radiation.
Earth's magnet field shields humans from dangerous radiation form the sun and protects the earth's atmosphere form the solar wind. Without the magnetic field, there would be no human life on earth.
Its main 'function' is to block most of the ultra violet radiation from the sun. Without the magnetic field - the UV radiation would be far too high to allow life to survive here.
the radiation charges or ionizes the air in the upper atmosphere. the charged air conducts and acts like a wire passing thru a magnetic field which shields the earth from other particles and rays look for Van Allen belts
A magnetic field indicates a ferrous core. This is necessary for life to begin because a magnetic field is needed to deflect solar radiation.
Cosmic ray intensity at Earth's surface would be greater when Earth's magnetic field passed through a zero phase because magnetic shifting is minimal. Fossil evidence suggests that the periods of no protective magnetic field may have been as important in changing life forms as x-rays have been in the famous heredity studies of fruit flies.
The half-life of a disk is the time it takes the magnetic strength of the medium to weaken by half.
it wil cancel the magnetic field whch will cause radiation from the sun to penitrate and kill off life on earth
The earth's magnetic field protects the surface from getting struck by solar radiation.
The compass needle is then showing to the opposite direction. However not only will this confuse explorers, but birds and animals to. Some animals navigate using the earths magnetic field. BUT you may think life will just die, it won't. Animals and life and survived before so there is no reason it wont. Also the only problem is that it could mess up the magnetic field, and stop the earths magnetic field blocking the suns harmful rays. Many people mistakenly think that the magnetic field protects the surface from cosmic rays, but it is mostly the atmosphere that does that. When the field switches, the magnetic field gets very low, and intense cosmic rays reach the top of the atmosphere (instead of being deflected by the magnetism), but only a few percent increase is measured at the Earth's surface. (At the North Magnetic Pole there is never any shielding, and that is how much stronger the surface cosmic rays are.) Some birds and protozoa that use the magnetic field for navigation would be disoriented. And our compasses would be useless until the field settled down in its reverse direction. The last recorded switch was about 790,000 years ago.
Directly : not at all. BUT It deflects the solar wind, thus the radiation levels on the Earth's surface is compatible with life; and there's still enough air for us to breath.