Prepare to be shocked at how strong your attraction to these activities might be. They all explore electromagnetism, the area of physics concerned with the interaction of electricity and magnetism—also known as the science of electromagnetic fields. It’s a push me–pull you kind of relationship, where a magnetic field is produced by the motion of electric charges, and electricity is produced by changes in a magnetic field. You can’t have one without the other.
Radio waves, infrared waves, ultraviolet waves, and x-rays all exist on the electromagnetic spectrum, with their own unique wavelength and frequency. In our day-to-day lives, electromagnetism powers things like motors, CT scans—even the human brain.
Try the interactive science "snacks" that follow and discover the pull of electromagnetism.
Want to join the conversation?
- In the second paragraph "Radio waves, infrared waves, ultraviolet waves, and x-rays all exist on the electromagnetic spectrum, with their own unique wavelength and frequency" does this mean that radio waves can for example become another type of wave or can they only be in specific categories?(5 votes)
- when we rub a balloon on our hairs and then take balloon nearer to pieces of paper it works like magnet what the reason is?(2 votes)
- that topic is different for Electromagnetism. It works on the Principals of Static Electricity, a different topic.(8 votes)
- what is magnetic flux?
How it is measure ?
How 'AC' and 'DC' generators work?(4 votes)
- Magnetic flux (ΦB) is the number of magnetic field lines (also called "magnetic flux density") passing through a closed surface (such as a conducting coil). The SI unit of magnetic flux is the weber (Wb) (in derived units: volt-seconds). The CGS unit is the maxwell. Magnetic flux is usually measured with a fluxmeter, which contains measuring coils and electronics, that evaluates the change of voltage in the measuring coils to calculate the magnetic flux. http://www.madsci.org/posts/archives/2001-05/990478243.Eg.r.html
Hope this all helps.(1 vote)
- In the second paragraph,how does x-ray have anything to do with electromagnetism?Isn't x-ray more like lasers?(3 votes)
- X-rays are lasers and lasers are a form of electromagnetic radiation. It has it's own frequency and wavelength.(3 votes)
- Does electromagnetic wave propagate in the form of loop or is it propagate as single wave ? this is the question asked by CBSE examination India I don’t get it please explain and answer.(2 votes)
- Electromagnetic waves propagte in loop but asa single loop,normal to each other.in which both the lopes generating magnetic field perpendicular to ach other.(1 vote)