After using water as the medium to form a closed circuit last week, I wanted to try something that involves heat and fire. But of course, fire can not be part of the circuit itself, and that is how I came up with the idea of red light to warn people to be aware of the fire.
It’s the holiday season and Diptyque is coming up its new carousel candle for 2020’s Christmas. The finely designed metal animal decorations made it so hard for people not to touch them. However, after the candle burning for a few minutes, the metal parts get really hot and can burn your fingers (which happened to me once…)
But with the red light indicator, this will never happen! See the video below to enjoy the greatest invention ever!
