The equation that uses both wavelength and frequency is c = fλ. c is the speed of light, which is constant. So that means if f increases, then λ must decrease, and vice-versa. Since f and λ are going in different directions then that means that they are inversely proportional.
A contingency fund can be defined as <span>a sum of reserve money set aside and allocated for use in an emergency but also to cover unforeseen expenses </span><span> and unexpected outflows</span>. This money reserves should help in situations in which some <span>business interruption or disaster result in extraordinary expenses.</span>
This fund is also called <span>contingency reserve.
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thank you for your advice
Ivan Pavlov - Russian psychologist known for the idea of classical conditioning
