How Machines Work Thames Flood Barrier/Electric Locomotive/Gas Pump/Photo-Finish Camera (2010– ) Online
- Original Title :
- Thames Flood Barrier/Electric Locomotive/Gas Pump/Photo-Finish Camera
- Genre :
- TV Episode / Documentary
- Year :
- 2010–
- Writer :
- Jeremy Nelson
- Type :
- TV Episode
- Time :
- 22min
- Rating :
- 6.4/10
Thames Flood barrier protects London from storm surges; diesel-electric locomotive is a rolling electrical generator; Self-serve gas pump mixes octane, measures fuel and presents bill; When stakes are high, all bets look to the photo finish camera.