What Wavelengths Are Used in Current Searches for Extraterrestrial Intelligence

question 55

Multiple Choice

What wavelengths are used in current searches for extraterrestrial intelligence by radio telescopes?

• A)wavelengths that are longer than the local wavelengths emitted by the Earth's atmosphere
• B)wavelengths that are longer than the radio wavelength "noise" naturally emitted by our galaxy
• C)wavelengths with the greatest speeds
• D)the same wavelengths that are used on Earth for TV signals

---

Definitions:

Payroll Tax

Obligations imposed on both employers and employees, frequently measured as a segment of the payroll.

Equilibrium Wage Rate

The wage rate at which the quantity of labor demanded equals the quantity of labor supplied in the market.

Payroll Tax

A tax that an employer withholds and pays on behalf of its employees based on the wage or salary of the employee, typically used to fund social security and healthcare programs.

Labor Supply

The total hours that workers wish to work at a given wage rate, or the workforce available for employment.