Lock 3 - Portrait of a scientist
SPOILER
The solution is simpler than it looks! Go to the Szalay display and open it with the key. There is a black picture with a photo and a formula, documenting a historical experiment to verify the existence of the neutrino in 1956. Place the clock face on the picture; it will automatically be in the right position. No need to turn it and no need to use the formula! The white spots are important: they show a path, the „escape of the neutrino” as captured in the experiment. Imagine they are hands of the clock. Notice they point to 7:20, as the clock face indicates. But there is a third hand of the „clock”, showing the seconds. It points to 1.
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SPOILER
Dennis Gabor visited Atomki in 1969 (you know this from Lehoczky). He brought the holographic object to commemorate something that had happened 15 years earlier (1969-15 = in 1954).
The signet ring concealed the picture of Julius Caesar – the month of July was named after him – it is obvious, but also mentioned in the MiniWiki article about Caesar.
The arrow (as a sweep hand) on the clock face points to 1.
Assemble the date: 1 July 1954.
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