HEPA filters are designed to filter the air by trapping 99.9% of airborne particles, such as dust, pollen, and tobacco smoke. HEPA stands for High Efficiency Particulate Air (filter).
A lens may be the most important part of a camera, because it forms and focuses photographic images. A filter, affixed in front of a camera lens, can help protect the lens from damage.
A clean, white HEPA filter is displayed horizontally on a bright yellow background. Used in air conditioners, vacuum cleaners, and air purifying machines, HEPA filters ensure that the air is clean by removing bacteria and impurities.
Sunlight filters through a sliding glass door and many-paned window into a home gym. The home gym has equipment for building strength and muscle and burning calories, including a rack of free weights, a weight machine, and a stationary bicycle.
Patio furniture comprising four wooden chairs and a wooden table sits waiting to be occupied. The sun from above filters onto the patio, highlighting fall foliage colors of red, gold, and green.
The results show that long-term exposure to ultraviolet (UV) filters -- including avobenzone, oxybenzone, and octocrylene -- is lethal for some organisms living in freshwater environments. ...
Science Daily. Wed, 02 Sep 2020 09:11:12 EDT.
Viavi (VIAV) to enable Hubei W-OLF Photoelectric Technology leverage its proprietary low angle shift filters in a bid to enhance 3D sensing technology.
Zacks Equity Research. Zacks. Mon, 31 Aug 2020 16:43:00 GMT.