Examlex
Visible light with a long wavelength and a low amplitude would be perceived as
Product
Any item or service offered for sale or use, often as a result of a manufacturing or production process.
Utility
A term in economics referring to the total satisfaction received from consuming a good or service.
Marketing
The process or activity of promoting, selling, and distributing a product or service, including market research and advertising.
Notion
An idea, belief, or opinion.
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