All credit cards have a black strip on them, known as a magnetic stripe. Inside, minuscule bits of iron are held in a plastic film. These can be magnetized in a north or south direction to store important data. When you swipe the card through a machine, the line of tiny magnets is read and information is obtained.
Using electromagnetism, most speakers contain a stationary magnet and a wire coil inside a semi-rigid membrane. When a current runs through the coil, the membrane rotates in and out because of the force between coil and magnet, creating vibrations that produce sound. Phone speakers use this same mechanism, only smaller.
What is Magnetism and How Does it Work. Facts About Vitamins In Food. How Do We Make Proteins. Leave A Reply Cancel Reply. Save my name, email, and website in this browser for the next time I comment. Time limit is exhausted. People have been ingenious enough to incorporate magnetism into the entertainment realm of our lives. However, because television images and some computer images are created through the deflection of electrons and their magnetic fields, the images can be easily distorted.
Although it may be cool to see the distorted image, your screen could become irreversibly damaged! My younger brother, oblivious to the potential damage of his actions, held up a small magnet to our television screen a few years ago.
I do not think his delight outweighed the fact that our television screen will forever have a green spot on it! Luckily, the magnet was relatively weak so the spot is only visible if you look for it.
Magnetism is fun and creates a lot of fun for people everywhere! The faint remnants of the "pretty green spot" there are two spots visible on the right side of the screen! You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email.
February 27, Leave a comment. The electrons then pass between two steering coils made of copper wire. Currents running through the coils produce magnetic fields. Therefore, as the electrons pass between the coils and through their respective magnetic fields, they are deflected to specific locations on the screen.
One coil controls horizontal motion, and the other vertical motion. When the charges hit the screen they cause the phosphorescent coating to glow. Because the picture is formed by steering the charges with the electromagnetic coils, any additional external field in the nearby vicinity is going to alter the field between the coils. This is going to affect the electron deflection, resulting in a distorted, fun-house-esque picture on the screen.
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