Can you breathe liquid? | Science Questions - The Naked Scientists
2008年12月21日 · You then pump the liquid into the lung and it then passes the oxygen into the blood, picks up the carbon dioxide and you pump the liquid back out again. The problem with this is that lungs are made to move gas, not liquid. It's very difficult to …
How long do dreams actually last? | Podcasts - The Naked Scientists
2023年11月3日 · How does a boomerang work? Are windturbines harmful to birds? Which are smarter, dogs or cats? Can you breathe liquid air? How do racecar spoilers work? How long are dreams in real time? What affects systolic blood pressure? Dr Chris Smith and Clarence Ford have all the answers...
How does chloroform cause unconsciousness? - The Naked …
2016年3月22日 · Ben - The first thing to say is that the movies definitely have it wrong with regards to chloroform. Chloroform has been used as an anaesthetic for about 150 years and the kind of misconception that you have from watching movies is that by breathing a chloroform soaked rag you'll knock someone out within a se
Recycling Oxygen? | Science Questions - The Naked Scientists
2008年2月3日 · We put this question to Mark Hempsell, Senior Lecturer, University of Bristol... The oxygen isn't strictly recycled.The carbon dioxide that the humans breathe out is filtered out of the air with a molecular sieve and then simply dumped overboard.The oxygen is created from the water that comes from the air and from the washbasins and …
Will dish soap harm my health? | Questions | Naked Scientists
2017年8月15日 · But, every person on Earth is exposed on a daily basis to cyanide through the food we eat, the water we drink, and sometimes the air that we breathe but, of course, the human race lives on. The reason for this is because the dose of cyanide we’re exposed to is actually too low to have any measurable effect. Katie - Well, that’s a relief.
Why does my nose run when it's cold? | Science Questions
2023年12月1日 · Neil - It's an adaptive response to make the air more efficient for us to breathe in. The mucus contains antibodies, so it helps us fight infections. The other reason we get more infections in cold weather is because the lining of our nose has little hair cells in it, and they're less efficient in cold weather, so infections can build up within ...
Studying Shipwrecks | Interviews - The Naked Scientists
2011年12月4日 · Diana - I see, and what kind of bits have you removed so far? Dave - We excavated the bow of the wreck. It’s the bow that's the most endangered so we uncovered that and we excavated the contents of that so we’ve uncovered the structure and we’ve been gradually taking that structure apart so that allow us to raise it as individual timbers rather than a big object.
How fast could a human be propelled to light-speed non-fatally?
2012年9月18日 · A more feasible solution would be to first fill the person's lungs with CFCs so he can breathe liquid which would make the lungs less buoyant. Next, freeze the body solid inside a block of strong frozen material. The acceleration limit would be determined by the relative strengths and buoyancies of muscle, fat and bone.
How do whales cope with deep diving? | Science Questions
2011年12月4日 · The main problem at depth is that the increased pressure pushes more nitrogen gas from the lungs into solution in the blood and tissues...Whales and other deep-divers are generally untroubled by this because they are adapted to remain submerged for extended periods of time, using only the oxygen already present in their bodies.
NASA's Europa Clipper mission blasts off - The Naked Scientists
2024年10月22日 · Lorenz - It's a very tenuous or dilute atmosphere. There's not much at all of an atmosphere. It's more than 10 orders of magnitude lower pressure on the surface of the moon compared to the surface of the Earth. No one can breathe there. You could basically feel …