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Sound Waves: The Symphony of Physics
Dr Helen Czerski investigates the science behind the sounds we're familiar with and the sounds that we normally can't hear, from Big Ben to the Stromboli volcano.
Nako ea nako: 60:14 metsotso
Boleng: HD
Letsatsi la Pele la Moea: Mar 02, 2017
Letsatsi la ho qetela la moea: Mar 09, 2017
Ketsahalo: 2 Ketsahalo
Nako: 1 Nako
Lentsoe la sehlooho : physics