Mathematical and Physical Journal
for High Schools
Issued by the MATFUND Foundation
 Already signed up? New to KöMaL?

# Problem P. 4213. (December 2009)

P. 4213. It is often stated about the line spectrum of Hydrogen that the lines of the Lyman series is in the ultraviolate region, the lines of the Balmer series are in the region of visible light, and the lines of the Paschen and other series are in the infrared region. However, this is not exactly true, because not all the lines of the Balmer series can be seen by the naked eye.

Using the Bohr model of the atom find how many of the lines in the Balmer series belong to the region of visible light, and which are they?

(4 pont)

Deadline expired on January 11, 2010.

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

Megoldás. A 400 nm és 800 nm közötti hullámhossztartományba a Balmer-sorozat 4 vonala esik; 380 nm és 400 nm között további négy színképvonalat találunk.

### Statistics:

 42 students sent a solution. 4 points: Balogh Beáta, Balogh Gábor, Barta Szilveszter Marcell, Benyó Krisztián, Bodosi Eszter, Farkas Martin, Fonai Dániel, Garaguly Gergő, Horváth Lóránd, Janosov Milán, Jéhn Zoltán, Kaposvári István, Kovács Attila, Kungl Ákos Ferenc, Laczkó Zoltán Balázs, Lájer Márton, Lőrincz Dóra, Mayer Martin János, Molnár Alexandra, Papp Géza, Para Attila, Patartics Bálint, Réti Dávid, Sápi András, Szabó 928 Attila, Szabolcs Márton, Tamási Mátyás, Varju 105 Tamás, Vécsey Máté, Vuchetich Bálint, Wang Daqian. 3 points: Balog Barbara, Csopor Dávid, Ercsey Tamás, Hartstein Máté, Krammer Rita Amaranta, Tóth 222 Barnabás. 2 points: 3 students. Unfair, not evaluated: 2 solutionss.

Problems in Physics of KöMaL, December 2009