CERN quiz

How well do you know the LHC?

Twelve questions about CERN, the Large Hadron Collider and particle physics. After every answer you get a short explanation. No sign-up, nothing sent anywhere.

Question 1 of 12Score: 0

What is the circumference of the Large Hadron Collider tunnel?

Question 1 of 12

What is happening at CERN today

Interactive exhibit, analog CRT television

From plug to picture

See live how electricity turns into a picture, in 3D, step by step, grounded in technical sources. ElectronTrail is an interactive 3D simulator showing how an analog CRT television works: current, signal, synchronisation, colour and picture.

Look inside the flow of electricity

An interactive simulation in four modes: a conductor cross-section, alternating current, a first-person flight and a zoom all the way down to quarks.

Step inside the picture tube

A guided walkthrough in six steps: power, signal, synchronisation, scanning, phosphor and picture, with an NTSC / PAL / SECAM switch.

The same leap, different devices

From a continuous signal to a stream of bits. CRT television versus digital, VCR versus DVD, turntable versus CD.

Five steps from plug to picture

Plug it in: mains power reaches the receiver.
Power flows: the power supply builds its voltages, the flyback builds the EHT.
Signal comes in: tuner, intermediate frequency, video chain.
Timing circuits: synchronisation, colour, beam deflection.
A picture appears: everything comes together as an image on the phosphor.

Six modes, one subject

A first-person 3D journey, a waveform lab and a failure simulator.