The Gelb Effect Is a Phenomenon Whereby an Intensely Lit

question 15

True/False

The Gelb effect is a phenomenon whereby an intensely lit black object appears white in a homogeneously dark space, thereby demonstrating the principle of lightness constancy.

---

Definitions:

Flu Pandemic

A worldwide outbreak of influenza, such as the H1N1 pandemic in 2009, which spreads quickly and affects a large proportion of the population.

Electoral College

The body of electors established by the Constitution of the United States that officially elects the President and Vice President based on the popular vote within each state.

Direct Democracy

A form of democracy in which people decide on policy initiatives directly, contrasting with representative democracy.

U.S. Senators

are elected officials who represent their states in the United States Senate, one of the two chambers of the United States Congress, with two senators per state.