Recent content by sophiecentaur

Vacuum is usually (?) stated in torr. because it's a sensible way of measuring absolute pressure, with 'perfect' being Zero and it's easy to compare performances. But do we yet know the desired pressure, in any units?

And some sort of spec: Size of vessel and actual pressure required. This is an Engineering Problem and it needs some numbers or you will never get an answer.

Newton 3 tells you the force that distorts the tyres equals the weight of the rider. Gravity is conservative so lifting the rider or not is irrelevant but Hysteresis etc. in the tyre will dissipate a lot of that work . The bigger the roller radius, the larger the contact area so the less...

That seems small, to me. If you measure the distortion of the tyre in contact with the rollers it could be quite high - producing higher rolling resistance higher than on a flat surface. If you measure the amount that the frame lowers as you add you body weight then that would be the height that...

It's rotatable to see the display window. in the wanted position. There's a cap / shroud with no holes but for the screen. Have a look at the website. The cap / shroud covers all the workings. There are a few possibilities to explain things. If the water flow were reduced so that the flow water...

@Averagesupernova good idea but the TRV rotates to point at anything and there’s no sign of any external sensor. It’s not a surprise that Wanted and Actual do reach equality eventually but, as you imply, it’s magic that they seem to agree with a good room thermometer too. It must be to do with...

It's awkward that the words like Engineer and Doctor encompass many levels of ability. You just can't tell what you're getting until the job's been successful or not.

The thread title is too vague for a proper answer. I imagine the discussions above assume knowledge of the context of jet engine technology. Context could make a huge difference but the simplest model would be appropriate here because the OP leaves the subject wide open. I had to start with a...

To revisit the OP. "those dots' cannot be the particles (either type) from the source. To be accurate, we must say that those green dots are the results of interaction between the particle and the substance on the screen. They are 'second hand' information. The only particles that we can see...

Absolutely - but the is thread is 'Highschool' level and this level of discussion could confuse someone with Highschool Maths and Physics. Lets face it- it confuses many with degree level qualifications although they may not all realise it. (Mea culpa, at times)

That's an entirely different piece of equipment. The CRT beam is designed o produce a high intensity spot which consists of a Coulombs worth of charge every second - how many electrons would that be. (Look up the electronic charge (e). The phosphors will be of a different kind with a short...

If you stop posting on this thread, it will soon work its way down the list, never to be seen again. Don't worry that your name may still exist on this forum. Who knows, you may find something interesting for another question. Perhaps we will hear from you. :smile:

The spots you see are due to the phosphors on the screen being hit by (fast enough) electrons. Those electrons can be due to the wanted photons hitting the first part of the amplification chain. But those electrons need to be accelerated so that they can actually excite a phosphor. To make the...

I wonder what you mean by that. (??) Are you reluctant to give details for commercial reasons or is it a matter of understanding the subject? Your question relates to Electromagnetic Induction and this Wiki page may help. Beyond that, Googling could help and you could dip into the AI option...

Possibly the picture is totally clear in your mind but we can only give an answer / opinion if you explain things in more detail. A sketch or photo would help but your words so far could be describing anything. Are you referring to an experiment you have seen in a book?