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Changes in the predicted motion of Uranus led to the search for an eighth planet.
Radio Signal
An electronic transmission of electromagnetic waves that can carry audio, data, or video signals.
Marginal Cost
The charge for generating one more unit of a product or service.
Total Willingness to Pay
The maximum amount an individual or group is willing to pay for a good or service, reflecting the total value they derive from it.
Public Goods
Goods that are non-excludable and non-rivalrous, meaning they can be used by everyone and one person's use does not reduce availability to others, examples include public parks and national defense.
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