As it continues to be pushed by sunlight, the solar sail-propelled vehicle will build up speeds that rocket powered vehicles would never be able to achieve. Such a vehicle would eventually travel at about 56 mi/sec (90 km/sec), which would be more than 200,000 mph (324,000 kph). Tha...
As it continues to be pushed by sunlight, the solar sail-propelled vehicle will build up speeds that rocket powered vehicles would never be able to achieve. Such a vehicle would eventually travel at about 56 mi/sec (90 km/sec), which would be more than 200,000 mph (324,000 kph). Tha...
Take a fresh 9-volt battery and a coin. Find an AM radio and tune it to an area of the dial where you hear static. Now hold the battery near the antenna and quickly tap the two terminals of the battery with the coin (so that you connect them together for an instant). You will ...
This entry was posted inDigital Modes,DX,Guest Posts,How To,News,Shortwave Radio,Utilityand taggedDCS,Digital Modes,Digital Selective Calling,Don Moore,Guest Posts,How To,How to Decode DCS,How To Decode Digital Selective Calling,Utility,YADDon How to build a PC keyer and AM modulator for the...
Virtually any type of metal will work as a conductor to build your Faraday cage with. It is usually alright if the cage has small holes in it, as long as they are not too large in comparison to the wavelength of the incoming electromagnetic wave. You can also use an existing metal box...
Take a fresh 9-volt battery and a coin. Find an AM radio and tune it to an area of the dial where you hear static. Now hold the battery near the antenna and quickly tap the two terminals of the battery with the coin (so that you connect them together for an instant). You will ...
When the demodulated audio signal that the shortwave band receiver generates is displayed with an oscilloscope the vertical sync pulses can be seen. With the tested CCD camera it was even possible to estimate the distribution of luminance across the picture based on the displayed wave form. Partly...
9.Machine Performance– Logging geographic coordinates of agricultural machinery in a farm field to better understand the spatial variability cost of field operation and machinery performance. 10.Future Food Demand– Diagnosing the future food demand and planning how to fulfill the needs of a growing ...
The thrusters are used to reorient the craft as it moves through space. Mounted on top of the main bus, the high-gain antenna is 12 feet (3.7 meters) across and looks like a satellite dish. This antenna is how the Voyagers receive commands from Earth and send the data they gather back...