Attached is an ad about microscopes I put in a local paper in April 2019.

In fact, I can't find them, although probably other people can.  I have an Acer Chromebook that hides documents and offers me the choice of finding ones I own and ones owned by everybody.  It's the most awful thing to use except for browsing the internet.  The job centre sent me on the European Computer Driving Licence levels 1 and 2, which were actually quite difficult to pass, but they are of no use whatsoever with the Acer chromebook.    I am extremely heavily gassed when I turn on the desktop computer, although it stopped working before I went on holiday anyway.

Sometimes i wonder if the inventor of AIDS is waiting to take the credit for uninventing it.

 

I haven't done many more observations recently although was interested when looking at a sample of blood under the Apex Learner that the image was entirely monochrome at whichever magnification.  Unfortunately the slide then disappeared from the hotel room I was staying in and I haven't repeated the experiment since, although since by coincidence I see there is a bit of blood where I dropped something earlier on my foot I might try doing so later today. 

I've just realised that although they say they can accelerate electron beams that then decelerate within the magnet lens in the electron microscope, the speed of ordinary light in air, rather than in a vacuum, is almost that of the speed of light in a vacuum - ie, "the speed of light "- which according to Einstein nothing could travel faster than. So they have come up with accelerators to accelerate electron beams so that they will travel as fast as light already does - if light actually does have speed - within the traditional microscope.

I have written to essays since the last post that I'll put up later. Both incorporate at least one new point, which is that Snell's Law changed with the introduction of the electron microscope. Snell's Law is used to calculate the change in the angle as light enters a different medium because of refraction. It is: angle of incidence x sin(e) x refractive index a. = angle of refraction or transmission x sin(e) x refractive index b. So that because you have a larger refractive index with a denser material you have a smaller angle when light enters eg a lens from air. It then returns to the prior angle, of course, when exiting the lens. However, with electron optics you have a new Snell's Law where the variable is not refractive index but velocity, which is inversely proportional to refractive index since the refractive index of any material is equal to the speed, or velocity, of light in air over the speed/velocity in the material. This point is laboured in the book I have been looking at so as to make it seem they are trying to make you think about it. However, what I hadn't thought of, despite references, for example, to 'slow electrons' is that nothing is supposed to travel faster than the speed of light.