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we make use of the observation that a charge (whether magnetic or electric, hence electromagnetic) in a field experiences force. For example, a wire carrying a current builds up a magnetic field around it, and when we place something with a magnetic charge near it (like a compass needle) it pushes the needle to try to line it up with the field (it's definitely not that simple, but it works unless you start doing the calculus and Fourier Transforms). Another neat trick; if we bring a second wire close to the first wire carrying the current, the field pushes on the electrons in the second wire and that tries to make a current in the second wire. This trick works on almost all electromagnetic fields, whether made by current flowing or by something else.
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Only some currents are able to produce magnetic fields?
No. Any current produces a magnetic field. Look at Maxwell's equations.
What is on a kindergarten entrance exam?
It has everything from advanced root trinomial functions pertaining to real life physics. They have to be able to use these skills to calculate the movement of a comet. They will be given certain conditions about the comet.
What Effect thermo coupling has if broken?
The thermocouple generates a small amount of electricity when it is heated which sticks open an electromagnetic valve,If the thermocouple fails, you'll be able to light the pilot, but it will shut down when you release the button.They're easy enough to replace, and they're under $20.Remember, this is an electrical connection, not gas. You don't have to sock it down or use sealer.
What is the REFRESH meta tag used for?
By using this tag you are able to define after how long a page has to be refreshed or after a certain period of seconds you want your visitor to be redirected to another webpage. Search engines usually don't like it when you use refresh pages. A better solution is to add a click able link.An example of a refresh value is:This refresh-tag will redirect you to another webpage automaticly.
Does anyone have a schematic for d-cell relaxation oscillator?
Relaxation oscillators just requie a certain voltage range in which to operate, so most any schematic for one will work, providing you have enough D cells to be able to supply the proper voltage.
Can electric fields be seen by human eyes?
The question is vague, and somewhat incomplete. There are a variety of different electric fields. All electric fields are defined as:A charged field that surrounds electrically charged particles and time-varying magnetic fields."Electric field" is a generic term used to encompass all such fields. So, the only possible answer is yes, some.Humans are able to perceive electromagnetic radiation between 390 and 700 nm (nanometers).Additionally, humans are able to visually perceive spark, corona, and brush types of static discharges, a different type of electric field.
What are three instruments scientist use to observe things not see able with human eye?
1. Microscope 2. Telescope 3. Special cameras able to detect certain frequencies of electromagnetic radiation, that the human eye does not perceive (infrared, ultra-violet, gamma rays, x-rays, etc...)
What is the relationship between electromagnetic waves and mediums?
The "medium" is whatever a wave requires, to be able to travel - so, the wave travels through a medium. In the case of electromagnetic waves, this medium is space itself, since it has certain electrical and magnetic properties.
Why is studying bacteria and animals who use magnetic fields to navigate useful?
Magnetoception is a type of navigation used by some animals. It is navigation that uses electromagnetic fields, and has been observed in bacteria. It is useful because scientists might be able to come up with different types of navigation.
What is the minimum frequency a human's eardrum is able to perceive?
300 Hz Mbambi
What is the minimum frequency a humans eardrum is able to perceive?
Approx. 80 Hz
What is an example sentence with the word perceive?
Unfortunately, sodium laureth sulfate inhibits the taste buds that perceive sweetness
What does hammerhead shark do with his head?
They are able to detect electric fields created by the movement of their prey. They have sensors at each end of the 'hammer head' to find the location and direction of the prey.In a similar way we use two eyes spaced apart to perceive depth of vision.
What is made up of electromagnetic radiation?
Electromagnetic radiation make light by the high energy that it produces that is able to be seen with the naked eye
Why does using a key help to identify things?
If you are relating to databases; A key is used to make certain fields or records unique. By doing this, you will be able to find that specific result throughout many entries.
What is realistic illustration?
it is an illustration where you are able to perceive the exact feature of the thing illustrated.... like wax figures
Do electromagnetic waves play an important rules in your life?
Yes. Without electromagnetic waves, you wouldn't be able to see; more importantly, there might be no life on Earth, since most of the energy we use comes from the Sun, in the form of electromagnetic waves.
