What is lost from the nucleus of an atom when it emits an alpha particle? two protons and two electrons
two protons and two neutrons
two neutrons only
two protons only

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.

explanation:

well we can't tell you because we cant see the time give a screen shot or something.

that is true   : ) hope this you