Health

Sunscreen: Why wearing it even in winter could be a good idea

Sunscreen has taken center stage in many skincare routines, especially among those hoping to prevent visible signs of aging. But while it makes sense to wear sunscreen every day in the summer when the sun's rays are most ...

Oncology & Cancer

Better diagnosis for brain cancer

A research team from both Scottish and UK institutions using infrared spectroscopy at Diamond Light Source reports a major advance in brain tumor diagnosis made by. This will enable non-invasive diagnoses of primary brain ...

Infrared

Infrared (IR) radiation is electromagnetic radiation whose wavelength is longer than that of visible light (400-700 nm), but shorter than that of terahertz radiation (100 µm - 1 mm) and microwaves (~30,000 µm). Infrared radiation spans roughly three orders of magnitude (750 nm and 100 µm).

Direct sunlight has a luminous efficacy of about 93 lumens per watt of radiant flux, which includes infrared (47% share of the spectrum), visible (46%), and ultra-violet (only 6%) light. Bright sunlight provides luminance of approximately 100,000 candela per square meter at the Earth's surface.

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