One simple way to think about it is this: When current enters the antenna, it does create a magnetic field around the antenna. We have also seen that the magnetic field will create an electric field (voltage and current) in another wire placed close to the transmitter. It turns out that...
To understand how light travels from the sun to the Earth, you have to understand what light is. Light is an electromagnetic wave–a wave of electric and magnetic energy oscillating very quickly. There are many different electromagnetic waves, and the type is determined by the speed of oscillat...
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think ...
We're learning more about the craving that fuels self-defeating habits—and how new discoveries can help us kick the habit.
Electricity, traveling along an electromagnetic wave, can tunnel from one coil to the other as long as they both have the same resonant frequency. The effect is similar to the way one vibrating trumpet can cause another to vibrate. As long as both coils are out of range of one another, ...
Does light travel as a wave, a ray or a stream of particles? Is it a single color or many colors mixed together? Does it have a frequency like sound? And what are some of the common properties of light, such as absorption, reflection, refraction and diffraction? You might think ...
How does a touchscreen work? Atouchscreentypically consists of multiple layers, including a glass or plastic panel with a transparent conductive layer on top. When you touch the screen, it detects the electrical charge at that specific location and sends the corresponding signal to the device’s...
How does an inverter work?We've just had a very basic overview of inverters—and now let's go over it again in a little bit more detail.Imagine you're a DC battery and someone taps you on the shoulder and asks you to produce AC instead. How would you do it? If all the current ...
Kulreet:Yeah. So, it's not only that it does something similar. This is where that technology came from. This is what I was saying is that as we start to look at how sound produces electromagnetic fields, and then we start to understand what these energy centers are that they are a ...
but recently these motors are getting the recognition they've always deserved due to the wave of EVs taking over our roads. The induction motor is still an amazing engineering marvel after all these years, and new research