Earthquake detector

1 11
Avatar for madlife
3 years ago

Chinese astronomer Chang Heng (Ad 78-139) invented an earthquake detector made of a vase and adorned with dragons heads and sorrounded by metal frogs. In each of the dragons jaws was a carefully balanced ball. When the first tremors of an earthquake made to device vibrate, making a noise to warm of the coming danger.

3
$ 0.00
Sponsors of madlife
empty
empty
empty

Comments

Really? Legit? Hahaha earthquake lang talaga ma dedetect nila? Kung may dumaan lang na malaking jeep d talaga sila mag iingay? Hahaha thank you for sharing that earthquake detector lods

$ 0.00
3 years ago