Recent content by Notinuse

Calibration slides are used in microscope work to measure. Example; https://amscope.co.uk/products/0-01mm-microscope-calibration-slide It shows 1 mm with 100 dividing lines; 0.01mm or 10 micrometers. This works great for magnifications up to, say 250x Beyond this the lines start to look quite...

@kuruman - thank-you for the original source; that is interesting. @pbuk - I did not suggest a rise; someone has edited the post title.

Please could someone explain this to me? GRAVITY IS A MYTH (59 sec) Summary; in slow-mo a man drops a virtually extended free hanging slinky; the lower part appears to hang in the air for a moment. In the comments: Rob; “..the overall mass of the slinky is falling but the bottom part is being...

Are there any other references as to at what (low) frequency faraday cages become ineffective?

Faraday cages of the conducting type are not effective for lower frequencies; https://en.wikipedia.org/wiki/Electromagnetic_shielding#Magnetic_shielding mentions a frequency of 100 kHz. The electromagnetic spectrum is composed of both an electrical, and a perpendicular magnetic field. If a...

Since the foil is pretty air tight 'drying adhesives' probably aren't going to work.

I need a recommendations on a glue to stick aluminium foil. Due to the size I need a product that can be brought in larger quantities rather than in small tubes; like a tub of wood glue or wallpaper paste. I'm asking because aluminium is reactive and I need something that will stick, but...

How sensitive are animals, specifically humans, to changes in gravity that influence their body? I am not talking about changes that a human would feel in a variable centrifuge. The thought experiment would be: 1. A person is sat on a chair or reclined on a sofa. 2. Adjacent is a...