THIS DAY IN SCIENCE: Email in the 18th century: The Optical Telegraph in 1791

Select Page


This demonstration is definitely an eye-catching crowd-pleaser. It is a great demonstration to show the interconnection between physics and chemistry, linking an example of light emission to evidence of chemical reactions. It is similar to a common example of bioluminescence, which occurs in fireflies, allowing them to “glow” in the dark.

Related Resources:

Join Now
Website Feedback
close slider