BUBBLE LIGHTS made from scratch
Bubble lights are mesmerizing things to watch, up there with lava lamps as one of the nicer aesthetic creations of the mid-20th century. [Tech Ingredients] made a decision to head into the lab to whip up some of their own design, taking things up a notch beyond what you’d typically find in a store. Bubble …
LISTENING TO THE sounds OF THE earth
A geophone is a specially built microphone for listening to the Earth. [JTAdams] found them at a affordable price so gotten some to play with. A geophone is used to detect vibrations from earthquakes, explosions, rumbling trucks, and vibroseis vehicles. To be beneficial it needs an amplifier and a recording device to capture the signals. [JTAdams] used a …