Mathematical and Physical Journal
for High Schools
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Problem P. 4274. (October 2010)

P. 4274. It is known that we can look through the glass of an ordinary window. What happens when the glass cracks? The crack can be noticed immediately. What is the reason?

(3 pont)

Deadline expired on November 10, 2010.


Sorry, the solution is available only in Hungarian. Google translation

Megoldás. A repedésbe került levegő és az üveg határfelületén a rá eső fény egy része visszaverődik, továbbá a repedés szélein elhajlik és szóródik is a fény.


Statistics:

142 students sent a solution.
3 points:130 students.
1 point:4 students.
0 point:2 students.
Unfair, not evaluated:6 solutions.

Problems in Physics of KöMaL, October 2010