Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

The white dwarf star are formed during the final stage of the star evolution and are found in the bottom left side of the HR diagram. These star posses high temperature but have low luminosity due to their small size.

the transfer of energy between two molecules spaced just nanometers apart plays a key role in many technologies, including photovoltaics, quantum information systems, lighting, and sensors, as well as in biophysics to measure nanometer distances and in photosynthesis. but an open question in this area is what effect, if any, the surrounding photonic environment has on this nanoscale energy transfer. by designing and performing a carefully controlled experiment to answer this question, scientists have settled the debate and found clues to improving the efficiency of many of the technologies that rely on this process.

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