In light-sheet fluorescence microscopy (LSFM), a thin layer of a sample is illuminated perpendicularly to the observation objective. This reduces photodamage and out-of-focus fluorescence while ...

The company is seeking F.C.C. approval to test an idea to reflect sunlight to Earth at night, possibly powering solar panels. Critics say it could be bad for people and wildlife.

Following wave theory, light can be seen as a form of energy in the electromagnetic spectrum. This spectrum encompasses energy at different wavelengths, of which only a small portion ranging from ...