Last year’s nobel prize went to three people who developed blue leds in 1990’s. red and green led’s were developed much earlier but none of the developers of red or green leds have won the nobel prize. this is partly because you need all three colors, red, green and blue to create white light. however, this statement is not fully correct, considering that some of the white leds use only blue leds encapsulated by a phosphor coated bulb to generate white light. can you make white leds out of red or green leds by utilizing phosphors? explain.

The passing of heat through a material while the material itself stays in place. a. radiation b. conduction c. convection

Which of the following harmful chemicals are found in tobacco smoke? a. carbon monoxide b. carbon dioxide c. nicotine b. carbon dioxide d. both a and c

Brades exam guidelines exam instructions billing & payments & support question 6 of 20 : select the best answer for the question use this illustration to answer the question below. forms & resources al programs 9 ww linics 6. in the circuit shown in the figure above, suppose that the value of r, is 100k, and the value of r2 is 470 kq. at which of the following locations in the circuit would you measure the highest voltage with your meter? rvices 999999 a. between points b and c b. between points a and b c. between points b and e d. between points a and c eredu mark for review (will be highlighted on the review page) mend < < previous question next question