C Ucke and H-J Schlichting 2009 Phys. Educ. 44 612 doi:10.1088/0031-9120/44/6/007
C Ucke and H-J Schlichting
Show affiliationsSnap discs made of bimetal have many technical applications as thermostats. Jumping discs are a toy version of such snap discs. Besides giving technical information, we describe physical investigations. We show especially how, through simple measurements and calculations, you can determine the initial speed (~3.5 m s−1), the acceleration (~30 000 m s−2) and the lower and upper snap temperature (~31; ~99 °C). High speed videos give even deeper insight into the jump.
Issue 6 (November 2009)
Received 27 June 2009, in final form 10 August 2009
C Ucke and H-J Schlichting 2009 Phys. Educ. 44 612
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