Recent
Tax
·16 words·1 min
Posts
qotd
Tax vs Fine
Listen Through Walls
·144 words·1 min
Posts
YT
laser
infrared
spying
Built a laser mic for spying.
Purkinje Effect
·1874 words·9 mins
Others
color
Why glow-in-dark always in green? Not blue/yellow/red/white.