Calculus, radio dials and the straight-line frequency variable capacitor

• Autores: Khristo Boyadzhiev
• Localización: International journal of mathematical education in science and technology, ISSN 0020-739X, Vol. 41, Nº. 5, 2010, págs. 667-672
• Idioma: inglés
• DOI: 10.1080/00207390903564686
• Texto completo no disponible (Saber más ...)
• Resumen

  • Most often radio dials of analogue radios are not uniformly graded; the frequencies are cramped on the left side or on the right side. This makes tuning more difficult. Why are dials made this way? We shall see here that simple calculus can help understand this problem and solve it.