9. If black body radiation is treated classically (without quantization) the result is (A) Too much light at low frequencies
(C) Too much light at high frequencies
(B) A perfect match to quantum theory
(D) Correct only at very low temperatures

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.