My dream come true – a Relay computer!
When I was in highschool I started working on a crazy idea. I wanted to build a simple computer constructed…
A Cool DIY Radiotelescope
This is something I've always wanted to try - to make my own radiotelescope. It seems somebody did it already. Very…
Emergency Excuse Generator
This device is a must-have for any respected professional. Any time the need arises, you will have an original, freshly-generated…
Human Stupidity Knows No Bounds
After the crash of the Internet bubble in the early 2000s a number of offices in the Silicon Valley were…
What is this? Take a guess…
This is a picture I took recently while testing the homemade dark-field filter. Can you try guessing what it is? It…
Pollen in the Wind
If you have a microscope and if you are getting bored of looking at algae and chasing paramecia, maybe you…
Bad eyes, diffraction rings, and appreciating cheap optics
I am nearsighted at something like 2 diopters. Without glasses things become a bit blurry, especially in the dark. Here…
Making a Triode Vacuum Tube
An amazing video of manual fabrication of a triode vacuum tube.
Just pond scum…
Plants may look inert and passive to us but we just live at different timescales. Shake a vial of pond…
One-Penny Darkfield Illumination Filter
Look at these two microscopic images. Both are of the same specimen (a dust mite), both are taken with the…