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uhoh
  • Member for 6 years, 3 months
  • Last seen this week
  • Taipei, Earth
25 votes

How do lasers measure short distances (<1cm) when electronics are too slow for time-of-flight to work?

16 votes

Why is the reflector on this millimeter-wave antenna spinning?

14 votes
Accepted

Why do silicon wafers look rainbow colored?

7 votes

Construction for a homogeneous field using permanent magnets

7 votes
Accepted

What does a transistor look like in the Intel 4004 microchip?

6 votes

Where are the rare earth elements in electronics?

5 votes

What kind of hardware implements Fourier transform?

5 votes

MPU6050 accel/gyro noise that behaves strangely - what might be doing this?

4 votes

Omnidirectional LED, is it possible?

3 votes

Strange LED behavior: Why is there a voltage over the LED with only one wire connected to it?

3 votes

Are there types of standard coaxial cable with a propagation velocity of 0.9c? What would be the application?

2 votes
Accepted

How to detect potentially poor antenna placement from GPS data?

2 votes

In the recent Con-Ed transformer "fire", what exactly produced the color of the huge blue glow over New York City?

2 votes

Measure distance using an ultrasonic sensor in a pipe

2 votes

A few questions on PIRs and other motion detectors

1 vote

Can a photodiode emit light?

1 vote

Can i put a resistor in backwards?

0 votes

How does this quartz antenna work?

0 votes

What exactly does C/No (dBHz) mean in u-Blox GPS data?

0 votes
Accepted

Need help understanding why noise temperatures are added, but real temperatures aren't

-4 votes

How can a crossed dipole (turnstile) antenna be omnidirectional in 3D?