An hourglass tells you what it is in the name — a glass that you use to measure an hour of time passing by. [EDISON SCIENCE ...

Learn how to create a simple DIY LED notification light for your smartphone by repurposing an old earphone jack and an LED ...

Explore how a basic LED can be used as a tiny solar cell, generating measurable voltage under sunlight. This hands-on ...

LED lighting has taken roadways by storm, but are they better than HIDs? We breakdown the differences between the two to find ...

Check out the latest stories, videos, and podcasts from the week of Dec. 8, 2025. During research for a newly opening museum ...

How a Finnish physicist named Karl Lemström once became obsessed with recreating the aurora borealis from scratch – and may ...