Recent content by derek10

Why? There are battery packs with cells connected in parallel and without a controller circuit like those used in RC

AFAIK current Androids with USB 2.0 still require only +5V to charge (I have a two-leaded charger and modern phones still charge), the data signal is only needed when you plug it to a computer and the phone shows a message to mount the internal storage/SD card/charge only Did you measure the...

Thank you. I mean accelerating constantly from the Earth toward c , so it will still accelerate but the speed increase of this acceleration will slow down with respect to the earth, but not with other objects, right?

Hi I understand that accelerating you get closer and closer to the speed of light wrt anything in an asymptotic way, but would acceleration still act the same way as non relativistic speeds (inertia, gyroscope, etc?) even if the speed won't increase almost at all (for example at 0.9999 c) Thank you

fussion nuclear energy

It was due to limitations of PAL and NTSC as well as interlacing jitter

I am stereoblind and I can still see 3D and calculate distances (probable worse than stereo capable people)

Goodbye circadian rhythms

I don't know about ipads but I get just the opposite in my Samsung laptop and Sony phone, when partially charged, they take longer to "discharge" from the same range than from 100, so they charged more than the indicator shows. Maybe a software calibration.

Thank you, that's what I suspected: wires and person are plates and the space between form the capacitor

To avoid derailing this thread, I will post a new one. Here's the discussion context. Thanks Consider this case: Battery operated amplifier (isolated from mains) Person, which is isolated from mains (not touching anything except the amplifier input,) when the person touches the amplifier...

Useful links you should check if you didn't: Voltage: https://en.wikipedia.org/wiki/Voltage Ohm's law: https://en.wikipedia.org/wiki/Ohm's_law Current: https://en.wikipedia.org/wiki/Electric_current Transformer: https://en.wikipedia.org/wiki/Transformer Power: V x I, I2R, V2/R A step up...

why can battery-operated amplifiers and oscilloscopes pick up the mains noise (50 Hz in Europe) when you touch the input cable?

Thank you for your replies and links The human body is not perfectly bilateral simmetric. (usually) heart on left side, liver on the right, off center stomach, etc.. But two almost identical lungs, kidneys, one bladder at center, etc Why is that? Interesting the reversed organ placement...

Russ Watters explained perfectly. 2A on a power supply, for example, means "Maximum current allowed is 2A", NOT "It always provides 2A". It's different to voltage which never varies.