Watch Mind Blowing Breakthroughs Science show Season 1 Episode 23 Online
- COUNTRIES: South Korea
- Subtitles: Español,English,한국어/조선말
An earthquake affects the whole city and everyone is scared. The Baron and Betty introduce a gentleman in traditional Chinese robes who calms them all. Then Zhang Heng explains how he created the first apparatus capable of detecting the origin and intensity of earthquakes.
