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Sputnik 1: The first artificial satellite to orbit Earth.
Credit card companies do not want merchants to charge credit card users more than they charge other customers, even though the merchant pays a fee of 2 to 3 percent (merchants negotiate an exact percentage with their banks) to process credit payments. In some countries this fee may be significantly more. If customers were responsible for this fee, it would often discourage credit card usage.
Tesla demonstrating wireless transmissions during his high frequency and potential lecture of 1891. After continued research, Tesla presented the fundamentals of radio in 1893
The identity of the original inventor of radio, at the time called wireless telegraphy, is contentious.
The credit card was the successor of a variety of merchant credit schemes. It was first used in the 1920s, in the United States, specifically to sell fuel to a growing number of automobile owners. In 1938 several companies started to accept each other's cards.
