Link of the day: a daily puzzle about how two things are connected
A new pair of things every day. Walk from one to the other through links between inventions, parts and principles in as few steps as you can, compare your route with the best one and share the result.
Examples: what two things have in common
- Bicycle — Tank
- Jacquard loom — Computer
- Kick scooter — Bicycle
- Pocket watch — Electric car
- R-7 rocket — Plumbing
- Submarine — LIGO
- Internal combustion engine — Data centre
- Headphones — Payment card
- Camera — Radio
- Heat pump — Incandescent light bulb
- Aeroplane — Tank
- Personal computer — Atomic clock
- Submarine — Data centre
- Steam locomotive — Aeroplane
- Camera — Computer
- Electrical grid — Personal computer
- Fitness tracker — Car
- Tank — Pneumatic tube
- Radar — Smart meter
- Car — Smartphone
- Electronic calculator — Greenhouse
- Tank — Heat pump
- Internal combustion engine — Refrigerator
- Computer — Smart meter
- Parachute — Elevator
- Bicycle — Archimedes’ screw
- Camera — Personal computer
- Electrical grid — Smartphone
- Windlass — Bicycle
- Personal computer — Radio
- Atomic clock — Computer
- Internal combustion engine — Freezer
- Truck — Oil well
- Electric generator — Smartphone
- Tank — Laser
- Submarine — Car
- Data centre — Pneumatic tube
- Truck — Turbojet engine
- Multistage rocket — Plumbing
- Newcomen engine — Bellows
- Windlass — Car
- Plumbing — Liquid-propellant rocket engine
- Smart meter — Radio
- Laser — Submarine
- Data centre — Refrigerator
- Bicycle — Watt steam engine
- Tank — Oil well
- Oil well — Submarine
- Truck — Pneumatic tube
- Submarine — Smartphone
- Data centre — Turbojet engine
- Internal combustion engine — Sewage treatment plant
- Car — Telephone
- Truck — Heat pump
- Smart meter — Internet
- Radar — Smartphone