Органическая изоляция класса нагревостойкости А -( t=1050 ) длительно использовалась при рабочей температуре соответствующей классу нагревостойкости F -( t=1550) Вычислить срок службы изоляции, если нормальный срок службы изоляции равен 60 годам. Срок службы органической изоляции уменьшается в 2 раза на каждые 100С, превышающих температуру данного класса изоляции
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1)Эту величину называют частотой излучения ν. Поскольку для всех электромагнитных волн скорость в вакууме (с) одинакова, по частоте легко определить длину волны λ: λ = с/ν. Мы просто делим путь, пройденный светом за секунду, на число колебаний за то же время и получаем длину одного колебания.
.2)Продольные волны — это такие волны, в которых колебания частиц среды совершаются вдоль направления распространения волн, например, звуковые волны. Поперечные волны — это такие волны, при которых колебания частиц среды совершаются перпендикулярно направлению распространения волн, например, волны на поверхности воды.