Electrostatic Dust Print Lifter

Electrostatic dust print lifters are a fascinating reality. The concept involves placing a conductive sheet over a surface where a fingerprint or shoe print might be found. When a significant electric field is generated, dust particles adhere to the sheet, revealing the print. It's noteworthy that achieving this effect typically requires around 800 volts, as mentioned in a now-unavailable paper.

In a clever twist, MacGyver employs mylar for the conductive surface and harnesses the capacitor from a disposable camera's flash to create the necessary electric field. While this might not reach the full 800 volts, it’s a practical solution. Additionally, high voltages can be generated by rubbing two different materials together in dry conditions, similar to how static electricity builds up when walking on carpet.

For those interested in a budget-friendly version, an individual reportedly constructed an electrostatic dust print lifter for just $50 using a stun gun. Unfortunately, the original post seems to have disappeared from the internet.

To further explore electrostatic principles, here are some demonstrations you can try at home.

Opening Envelopes with Steam

Believe it or not, using steam from a radiator effectively opens envelopes. This simple trick showcases MacGyver's resourcefulness.

WiFi Wall Detection

While MacGyver's method doesn’t literally detect walls, he creatively employs a WiFi router outfitted with a partially parabolic dish made from aluminum foil. By connecting the router's output to a speaker, he demonstrates how WiFi can identify empty spaces behind walls.

WiFi operates as a radio wave, which typically penetrates walls. However, obstacles can interfere with the signal. MacGyver's approach exploits these reflections; when a wall conceals an empty space, the reflected signal alters the sound produced by the speaker.

Although this method might not yield accurate results, it’s grounded in the real phenomenon of WiFi interactions with walls. Interestingly, MIT has developed technology that uses WiFi to "see" through walls, although this episode predates that innovation.

Film Roll Distraction Technique

In a classic MacGyver maneuver, he ignites a film roll, creating a spectacular diversion at a movie theater. The resulting explosion captures attention, showcasing his knack for turning ordinary items into effective distractions.

Originally published at http://rhettallain.com on February 9, 2019.