4088 KB28 KB201420242023Kuk, Rokletnik:1010 str.številka:2COBISSID_HOST:166312451ISSN:2385-8567URN:URN:NBN:SI:doc-S5Q6WWDAenZaložba Fakultete za matematiko in fiziko Univerze v LjubljaniMatrikabubblesfrekvenca zvokafrequencyliquidsmehurčkisoundtekočinezvokThe hot chocolate effect|Introducing bubbles into a cup with liquid changes the pitch of the sound it makes when tapped with a spoon. This is known as the hot chocolate effect. Simple experiments that can be performed at home, are presented, demonstrating the changing speed of sound in water when bubbles are present. A simplified but effective mathematical model is derived. In addition to demonstrating the effect, the experiments described provide an opportunity for students to develop skills to think like a scientist by devising and testing explanationsUvajanje mehurčkov v skodelico s tekočino spremeni višino tona, ki ga slišimo, ko skodelico udarimo žlico. To je pojav vroče čokolade. Predstavljeni so enostavni poskusi, ki jih je mogoče izvesti doma in demonstrirajo spreminjanje hitrosti zvoka v vodi, ko so prisotni mehurčki. Izpeljan je enostaven a uporaben model. Opisani poskusi ponujajo priložnost za učence in dijake, da razvijajo sposobnost znanstvenega razmišljanja s predlaganjem in testiranjem razlagTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of Slovenia