To create a simple radio transmitter, what you want to do is create a rapidly changing electric current in a wire. You can do that by rapidly connecting and disconnecting a battery, as shown at left: A better way is to create a continuously varying electric current in a wire. The simples...
By tapping the terminals of a 9-volt battery with a coin, you can create radio waves that an AM radio can receive! HowStuffWorks Radio can be incredibly simple, and around the turn of the 20th century this simplicity made early experimentation possible for just about anyone. How simple ca...
Radio waves, both natural and man-made, contain electrical energy you can tap using simple solid-state hardware. Radio wave collectors use long, insulated copper wire antennas to drive current to a load-bearing device (cell phone charger, battery, light bulb). The electricity collected can be ...
How dust makes radio wavesdoi:10.1093/astrogeo/atx074OxfordAstronomy & Geophysics
Like windows, doors are notorious for letting sound waves leak in and out. To create a better sound barrier around doors, swap hollow core doors for MDF (medium density fiber) or solid wood doors, and add closed cell foam tape or weather stripping around door jambs. If you have sliding ...
Low Wi-Fi Speed Due to Poor Wi-Fi Signal Strength Context As WLANs use radio signals to transmit service data, radio waves in the air are attenuated due to the impact of the surrounding environment. If the Wi-Fi speed is low, check the Wi-Fi signal strength. The strength of Wi...
To create a simple radio transmitter, what you want to do is create a rapidly changing electric current in a wire. You can do that by rapidly connecting and disconnecting a battery, as shown at left: A better way is to create a continuously varying electric current in a wire. The simples...
To create higher frequency waves -- waves in which the points of high pressure and low pressure are closer together -- the driver diaphragm must vibrate more quickly. This is harder to do with a large cone because of the mass of the cone. Conversely, it's harder to get a small driver...
fMRI is based on the same technology asmagnetic resonance imaging(MRI) -- a noninvasive test that uses a strong magnetic field and radio waves to create detailed images of the body. But instead of creating images of organs and tissues like MRI, fMRI looks atbloodflow in the brain to detect...
skip to main content stay fully charged. get unlimited access to wired - only $30 $5 for one year get digital access jan 18, 2001 8:55 am how to boost radio waves by using more than one antenna, data through radio signals can be boosted by as much as a factor of three, scientists...