Friday, July 31, 2015

Electric Field vs. Magnetic Field

Electric Field vs. Magnetic Field The area around a magnet within which magnetic force is exerted, is called a magnetic field. It is produced by moving electric charges. The presence and strength of a magnetic field is denoted by “magnetic flux lines”. The direction of the magnetic field is also indicated by these lines. The closer the lines,...

Does a vacuum cleaner work in space?

Does a vacuum cleaner work in space?   No. First of all it wouldn't stay on the ground. and why would you need to vacuum? A vacuum cleaner depends on a difference in air pressure to operate. With no air pressure in space, there could be no difference in air...

Would a magnet work in a vacuum or space?

Would a magnet work in a vacuum or space?   Magnets work because their atoms are aligned in certain orientation so that the magnetic field is not chaos but is organized as ripples around the matter. Such organized electromagnetic field of any nature can exist ...

Would a magnetic compass be suitable to be used for space travel..?

Would a magnetic compass be suitable to be used for space travel..?   No. Magnetic compasses work based on the Earth's mantic field, in space there is no magnetic field for the compasses to work with. A different system, possibly similar to Global Positioning...

How compass apps can tell direction..??

 How compass apps can tell direction..?? If you were to go back in history and meet with the explorers and navigators of yesteryear, they would probably be wielding — at least one — magnetic compass. Whip out your compass app on your smartphone, and they’d probably be flabbergasted — well, with that and your time machine. But how has the...

Why Magnet Is Used In Speaker ..??

Why Magnet Is Used In Speaker ..??      All speakers don't use magnets. Only magnetic speakers use a magnet to produce mechanical vibration (sound) through the interaction between the magnetic field created by the pulsating electronic signals passing...

Thursday, July 30, 2015

The world’s most powerful laser has just been fired in Japan

Scientists in Japan have set the record for the most powerful laser ever fired, producing a 2 petawatt pulse - that’s 2 quadrillion watts - using a device known as the Laser for Fast Ignition Experiment (LFEX). While they could only sustain it for a mere one-trillionth...