The well-worn Happy Masks Pro showed about 30% filtration efficiency for 0.5-micron particles (granted, the manufacturer recommends that the Happy Masks model not go into a washing machine at all, which this mask had many times). In the lab, both masks showed a reduced ability to block particles. Enro masks can be machine-washed but should be hung to dry, and Happy Masks models should be hand-washed and air-dried. During our August 2021 round of testing, we also evaluated Enro and Happy Masks models that had been worn and washed for about six months (including a few rounds in the dryer, which neither manufacturer recommends). It’s important to know that a mask’s filtration ability can be impacted by how you use and care for it. In addition to reading research studies on face masks, I browsed extensively online for commercially available kids masks, and I spoke with at least 20 other parents about their experiences with masks for children. To better understand protection from aerosol spread of the virus that causes COVID-19, I spoke with aerosol expert Linsey Marr, PhD, a civil and environmental engineering professor at Virginia Tech. And to find out what pediatricians are recommending, I interviewed American Academy of Pediatrics spokesperson Jennifer Shu, MD, a pediatrician and author. I also spoke with Laura Markham, PhD, a parenting expert and psychologist, about ways to encourage children to wear masks. ![]() No, gas was never used against the British, so the effectiveness of the preparations was never tested.Ĭhildren had to take regular gas drills at school.To learn about how different types and layers of material, as well as filters, can impact a mask’s effectiveness for a child, I spoke with Taher Saif, PhD, a mechanical engineering professor at the University of Illinois at Urbana-Champaign who researches biomechanics and nanomechanics, and who studied various fabrics’ droplet-stopping abilities. To tell people that it was all clear they would ring a bell. To warn people that there was a gas about, the air raid wardens would sound the gas rattle (pictured below). How were people warned about a gas attack? Posters instructed people how to put their gas masks on There was a special gas mask for children. The smell of the rubber and disinfectant made some people feel sick. When you breathed out the whole mask was pushed away from your face to let the air out. When you breathed in the air was sucked through the filter to take out the gas. It was difficult to breathe when wearing a gas mask. The masks were made of black rubber, which was very hot and smelly. People were fined if they were caught without their gas masks.Ī poster remindng people to lways cary their gas masks ![]() Posters reminded people to carry their gas mask at all times. There was a fear that it would be used against ordinary people at home in Britain (civilians). It was so powerful that only small amounts needed to be added to weapons like high explosive shells to have devastating effects. ![]() ![]() It was almost odourless (could not be smelt easily) and took 12 hours to take effect. Mustard gas was the most deadly of all the poisonous chemicals used during World War I. Gas had been used a great deal in the First World War and many soldiers had died or been injured in gas attacks. Why did people fear that chemical weapons might be used in World War Two? Instructions written on the inside lid of each gas mask box Why were people given gas masks during the war?Įveryone in Britain was given a gas mask in a cardboard box, to protect them from gas bombs, which could be dropped during air raids.Ĭlick here to download a make it yourself a Gas Mask Box(87.7 KB) By September 1939 some 38 million gas masks had been given out, house to house, to families.
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