I want to know how do you build a homeade
seismograph?
Construct a box and anchor it to the Earth. Inside suspend a large magnet surrounded by stationary coils of wire fastened to the box.
how to make a simple earthquake alarm
Seismograph
Build simple electroscope - discharge time can show humidity and ionisation situation
Zhang Heng was the firts to invent the earthquake weathercock in 132 A.D.
it help tell the direction of where it came from and the slightest movement will make the ball fall if you are referring to the ancient china one
Detector rails generate redstone energy (for a redstone wire or other contraption) when a minecart is on them. You can make a simple minecart accelerator by placing rails like so: [minecart rail][detector rail][powered rail][powered rail][detector rail][minecart rail]
i just asked for a frequency detector jst as brain wave detector.
there are two types:- 1) simple diode detector 2) practical diode detector the diode is common device used in am demodulator. signal(am demodulator signal ) is applied anode and output is taken from cathod
An earthquake causes vibrations to move through the ground (in simple terms this makes the ground shake). If the earthquake is large and releases a lot of energy then the amplitude of the shaking (a bit like the height of a water wave) gets larger and so does the ability of the earthquake to cause damage.
Yes, and you wouldn't need the motion detector.
There is a device called a radar detector, but it will only detect a radar signal, not police in general.
Sure, but what you would have to do would be to put the switch in the TEST circuit of the detector.