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.
A new report from researchers at Boston Medical Center warns that selfies and apps with filters create false senses of reality and could be affecting teen girls' body image.
Daily Mail. Thu, 02 Aug 2018 17:36:18 +0100.