@Mister T,
I believe you are correct. The french word for experiment is "Expérience".
@Christian Desbordes,
I could suggest you search instead for "10 characteristic experiments of physics" but I think you would be wasting your time.
There is no such thing as a definitive list of "10...
First: Van De Graaff generators are DC, not AC.
At school, we were shown the method based on two slivers of gold foil that were connected at the top and with no voltage applied they would hang down (parallel, like). If a voltage was applied at their junction, the 'like charges repel' effect...
@ Austin:
No, the vast majority of solar systems orbit the centre of our galaxy in a roughly circular orbit. Very like our solar system's planets orbit around our sun.
There are plenty of solar systems which don't follow tidy 'more-or-less' circular orbits around the galactic center but they...
Hi Austin,
I got my 8x10 Carl Zeiss Jena binoculars 38 years ago. They're still in use!
I had a pair of 16x50's before that but they were impossible to hand-hold steadily and the exit pupil is noticeably smaller. 8x50's are great.
I got my first Dob (home-made using a 10" f/5 mirror) about 4...
You will learn more (and quicker) with just a *good* pair of 8x50 binoculars and a star chart. I would consider a pair of 10x50 or 10x60 but the higher magnification will give you problems with image stability when hand-held - mounting them on a tripod would help but it's a hassle and...
It’s actually quite simple:
“Sun's rays reaching us are always parallel”
Parallel implies that the light rays are traveling in the same direction.
In the case of the sun, and any small-scale measurement you might do in your garden, it is an approximation that is so close to being correct that...
Indeed! Our physics class (1969/70 ?) did a 'scrap-heap challenge' demo of the system. The receiver's sensor was an OC71 transistor (with the black paint scraped off). We never got it to work over any significant distance in daylight but after dark it worked fine provided you had good optical...
Garrard 401 showing the stroboscopic markings around the edge of the turntable:
https://en.wikipedia.org/wiki/File:Garrard_401_turntable_with_SME_3009_tonearm.JPG
The three different bands were for 33.3, 45 and 78 rpm. It would have needed six bands to cover the three rpm standards at both 50...
Keep the centre of gravity as low as you can get it. Fins will help too, provided they are accurately aligned with the axis of the body of the rocket. More specifically, fins near the base of the rocket help to move the centre of gravity lower and whilst still within the atmosphere will help to...
@MartinMb
You're quite right in thinking there has to be some compensation for the motion of the detectors, but perversely it is not the complex and rapid motion of the detectors through the universe that cause the most headaches. Those movements can be fairly easily factored into the...
Hi,
You need to read or at least be aware of Larry Niven's 'Neutron Star' short story. Synopsis here. Pay particular attention to the "... Afterthoughts ..." comment from Niven in the Notes section towards the end of the page. Sorry I can't help with the mathematics.
I'd recommend reading it...