Applied Science video on SLA printed circuits: https://www.youtube.com/watch?v=Z228xymQYho
Ben Krasnow
Thursday, June 13, 2024
Micronics SLS nylon 3D printer makes electronic circuits
Applied Science video on SLA printed circuits: https://www.youtube.com/watch?v=Z228xymQYho
Saturday, August 26, 2023
Photosynthesis photography: Making images with living plant leaves
How to make photographs using plant leaves: the technique, examples, f/0.5 camera lens construction, and tips & tricks that I learned along the way.
Inspiration for this project came from a 1970's video made by The Royal Institution: https://www.youtube.com/watch?v=l2JTiAASdyw
Starch formation refs: https://www.journals.uchicago.edu/doi/pdf/10.1086/329993
Video describing inkjet printed photomasks: https://youtu.be/bR9EN3kUlfg?si=k9RU6EwM5-pKx2tr&t=643
A different technique to make leaf prints: https://www.alternativephotography.com/chlorophyll-prints/
Video from Alpha Phoenix on making photos with cyanotype: https://www.youtube.com/watch?v=ewQQX3fxQKk&t=85s
Ray optics simulator: https://phydemo.app/ray-optics/
Giant tweezers: https://www.amazon.com/Stainless-Tweezers-Anti-slip-Aquascape-Maintenance/dp/B07LDLWJMM/
Anhydrous ethanol: https://www.extractohol.net/1gal-200-proof-pure-food-grade-ethyl-alcohol
Hanging basket geranium plant: https://www.lowes.com/pd/2-Gallon-Multicolor-Geranium-in-Hanging-Basket-L5450/1000151713
Methanol toxicity: https://en.wikipedia.org/wiki/Methanol_toxicity https://sci-hub.se/https://doi.org/10.1016/j.ccc.2012.07.002 Skin absorption in a quantity high enough to be a problem is rare, according to this.
Support Applied Science on Patreon: https://www.patreon.com/AppliedScience
Wednesday, July 5, 2023
Measuring the amount of lead (Pb) consumed when drinking from lead crystal glassware. Is it safe?
I show a "DIY" chemical color-based method to determine the amount of lead in water, and then use the method to measure the amount of lead extracted from various types of lead crystal glassware.
Skip to 27:05 to see the detailed results
Sunday, May 28, 2023
Multi-layer reactive foil: no fuel, no oxygen, tons of heat
Sunday, April 9, 2023
Temperature-sensing RFID tag in magnetic stir bar
I describe an old project in which a few friends and I designed an RFID tag that fits into a magnetic stir bar and measures temperature wirelessly. We decided to open-source the project, and you can see the PCB design and tag firmware at the github repo below. I don't think I have the firmware for the base station, unfortunately.
https://www.ti.com/product/TMS37157
https://www.digikey.com/en/products/detail/texas-instruments/EZ430-TMS37157/2183733
https://github.com/benkrasnow/Temperature_sensing_stirbar