Examlex
Interferometry is easiest to use with telescopes that observe at very short wavelengths.
Informationally Efficient
A market condition where all existing information is completely accounted for in stock prices, thereby eliminating the possibility of consistently securing above-average profits.
Random Walk
A statistical theory suggesting that stock market prices evolve according to a random path, making future movements unpredictable based on past trends.
Stock Market
An aggregate for buyers and sellers of stocks, which represent ownership claims on businesses; includes stock exchanges, over-the-counter markets, and electronic trading platforms.
Efficient Markets Hypothesis
The theory that stock prices fully reflect all available information, making it impossible to consistently achieve higher returns.
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