Why do circuit breakers go up for on and down for off?

If it doesn't leave the house, why would it be illegal, and why would anyone find out?

Anyway your neighbour may well appreciate free music. Obviously you'd not transmit on an in use frequency, since then you wouldn't be able to hear your own record.

How can anyone not own a sledgehammer?

Who decide what are distinct colours anyway? To my way of thinking, there are six /distinct/ colours in the spectrum, red, orange, yellow, green, blue and violet.

Indigo was added by Newton to make it up to seven, which he regarded as a magic number.

Blue and violet are distinct, as are red and orange. But reddy orange? There's a colour there, but I don't think of it as having a special quality of "reddy-orangy-ness". To a lot of extent it's a matter of whether there is a name for the colour.

Perhaps an artist or clothes designer would, and perhaps they have a lot of other colour names to help them.

I don't suppose they had been invented. Anyway, they need transistors.

People got used to hearing squeals in the early evening when people were tuning their radios in. Just as, later, people listening on long wave got used to the whistling interference from 405 line TVs.

By WW2 most radios were superhets so the problem went away. Regenerative circuits were only used by hobbyists and in cheap radio kits.

Not my quartz lock direct drive turntable. The platter is aluminium and has what looks like a tape head inside which reads off a ferrite coating inside the rim. Presumably there are two tracks of signals recorded on it, one for 33 and the other for 45 RPM.

Have you ever purchased paint?

To get around the need to name every color, color numbering systems have been devised. One extremely popular one is the Pantone Matching System:

Human cone cells come in three wavelengths, roughly r-g-b, so if we name more colors it's arbitrary.

Retinas vary a lot between individuals too, especially males.

I had a turntable that had a plastic stroboscopic disk mounted on it to dial in the speed. It was strictly 33 rpm though. iirc the platter was aluminum but it was quite heavy.

I've got a direct drive quartz controlled turntable that can be set to exactly 33.33 +- a bit if you dial it in.

Still prefer CDs tho

We can perceive a lot more colours by comparing the relative signals from the different cones.

How we name them is up to us, according to how important they are.

Many (mostly male) humans have only two kinds of cones: blue and yellow, which is what most mammals have.

Males with just the two kinds of cones (referred to a red/green colour-blind) can see about three distinct colours in the spectrum instead of six.

Not thirty-three and a third?

The old turntable my father had had 4 speeds: 78, 45, 33-1/3, 16-2/3. He said that last one was used for educational materials.

Or for playing Pinky and Perky records and hearing normal voices!

The digital display only goes to two signifiant places...

You should have got a transformer to take a bit of voltage off for your older appliances.

There's a power supply circuit for electronics with a series capacitor and zener diode that will run on any AC voltage. Perhaps not efficiently.

I get 241 to 256 which is very variable, I guess the tapping changer isn't very fine. It's a new (a few years ago, replaced like for like or maybe a bit bigger) substation, but maybe the tapping changer is on the next substation up. The substation is right across the street. I complained when it went above the max tolerance, but they refused to fix it because the other end of the street would have dropped below the minimum, and they claimed going too low was worse for devices than too high. I'm not too sure about that. I had many LED bulbs break, they could have been s*it, it could have been the voltage, but they're all run through my computer's UPS now, which has a voltage tapper built in. I often see the orange LED on for "voltage too high, reducing". Not getting so many breaking now, but then I'm using a different make.

Odd, you'd think it would be easy enough to drop it to 230 with tappers. Mind you, it means we can draw less power through the cables, and they lose more power to heat through them.

Why do Europeans allow a lower voltage? The devices are supposed to be designed to take a certain range, so why have different tolerances in different countries?