When a smog alert is declared, citizens are often told to stay indoors, but that dirty air is still going to get in. However, people in affected cities could soon breath easier thanks to a new ...

Several light sources produce light across various wavelengths. While this wavelength spectrum can be useful in lighting applications, other applications require light with a restricted visible ...

The article details safe solar observation techniques, emphasizing the necessity of specialized filters (white-light and Hydrogen-alpha) to protect eyesight when viewing the Sun. White-light filters ...

The filter material to analyze particulate matter with Raman or FTIR microspectroscopy plays a vital role. Their simple task is to filter liquids to isolate solids onto filters – but as soon as you ...