and humans are close to that same pansy xanax. and pansy is even to a dog, a doctor series about our complex relationship with animals. watch now on youtube, dw documentary the out of the 225 windows of the nobel prize in physics just fine. so women in fact, women under represented generally in the subject in western countries in particular that were found few of female physics students and 3 such as the male. how do you get goals interested in physics? perhaps with an exciting experiment, the welcome to dw science shaped the

. the object that's crushing down here comes directly from the stratosphere. it's the result of months of preparation by students at this all goes high school in southern gemini, a few hours earlier. the final preparations are on the way so the experiments. it's a joint project between the school and cosmo is university of education. the aim is to launch a high altitude weather balloon with a measuring crow into the stratosphere. everything's being planned and built here and include some age appropriate prompts. as we've started the chocolate marshmallow on that with super glue so that we can see how much it expands in the, with the emphasis on practical work makes the learning relaxed. almost effortless in the bottom line is on the whether the noun, a probe, a power shoot. it's really swelling. so i'm very excited. now once i find, i found it really exciting the topic. i'm what it looks like up that i'm what will

happen to the pounds when they're up that the shooting been posted. i've always been interested in once. he looks like up that what the us looks like from above and yet assess it kind of fascinated me. i think going to move this kind of top. everything's assembled full measuring devices around board, the gps track of working time for a final check for insurance reasons, the pro mist way, no more than 2 kilos. the experiment has a further purpose beyond the obvious how to get goals interested in physics and how to make teacher training and science subjects. interesting with more practical experiences on my list. come down, please respond customer. what we've learned most is how much fun it can be off in the gums, the gums, noisy other devices in a really curious way. what's interesting to us. yeah. and then approach the physics that we need for that is it, the math is inductive. awesome. and kind of a kid we're not doing well, keeps science, is we doing an educational project?

and at the same time we're learning about the composition of all right, ms. vega. i'm perhaps also how unique this planet is that we're living on right now . and then regarding the university students have helped supervise the peoples as a full and the physics is so relevant to everyday life out of talk also in situations . but she don't yet know, perhaps don't even think about the thing spot in the, in the exciting thing about physics is that many people don't realize that it surrounds us. eventually, every moment at the launch, it's clear that this is all about physics. the, the pressure is on 5000 liters of helium. and the whole school watch countdown. the time the balloon rises rapidly, soon it's no longer visible. and then people, students, teachers, parents,

the chase is own land very exactly about that. then the gps transmit to temporarily fails, is the pro last time in newton's in the balloon is full cost to land in a nearby town with this noise. that's all the blueness mandate that they're in the tree at the top left the slate. did it guys the victorious ending? what's about the house, the most, my life that is next, a bit small. the highlights, analyzing the camera footage the

how does that sound cool, really cold desktop the radiation measuring device has had enough because too much radiation. mm hm. that's what was be paying now. yes, it reached its daily maximum. doug's just come with us. i find that in physics you just discover things that i don't think you really teach it. you experience it yourself and that's what i think we did today on just sending coming over to them. i'd say we achieved what we wanted to achieve as the pollutant maintenance stuff. a few weeks later, a debrief obtained altitude such a 4602 mates is a 2 and a half hour journey into the stratosphere and the high speed return. when in

missile some of the measurements what well others less. so that's just how it's used in physics. we're still working to save a couple of the day to set in today. we evaluate what we already have a minute. let's do that. we have on this one, we were a great, great and had fun. we were interested in the solve the tasks we were given really well set time with good news, which just shows that education can be simple when it's fun. facing trouble is another male dominated environment. to date, just 12 percent. a rucksack, supplies them with add to breeze and to say removes exiled carbon dioxide. the seats have several layers that need to be gas tight and with stand excess pressure . the outlet is made of fire retardant. catalog coated with a menu. the suits protect against the vacuum and the cold, as well as mike cray, meteor writes, and solar radiation special underway with tubes through which cool water flies

prevents the asper notes from overheating. during this strenuous look as to trains of space missions in special swimming pools like type is that more than $100.00 killer heavy suit substituted with whites which allow them to flight corresponding to the conditions in the international space station is a waiting list environments. this is because it will bits the so fast that centrifugal force and gravity balance each other around. it travels 7 kilometers per 2nd, the, the asteroid, moving at the same speed. but they didn't notice it. physically speaking, outside the station there in their own little bits. even a tiny push movement can h at this old bitch and cause them to drift away the up guess that i still have already lost

they wouldn't be able to return on their road. that's why the extra notes that tended to the spacecraft at full dreams. in 1984 nessa tested special get backpacks. these were developed submissions were asked to notes have to move far away from the spaceship. for example, to capture satellites. the in an emergency astronauts can ignite this trust is to stabilize deposition and then return to the ship the during extra the hit killer activities. only i assess astronauts as a kid with 2 testers. these lines of attached to poles and candles, which the astronaut seems to move around when they change position, at least one. tell them this ways be attached to long distance is the ask,

you know, so, so tulsa on the right bus, take home to the deployment science, special platforms for that fee to help them securely in place. we low phones during your questions. do you have on it so you send it to us as a video, text or voice message. and if we don't switch on the show, we'll send you a little surprised as a thank you to come on. just ask when it comes to choosing an apprenticeship in germany goes to pick it up to train is assistance and the business or medical sexes. boys tend multiple tobacco products will become electricians, career choice. this was still very much shaped by stereotypes, but it doesn't have to be done. why a step and prefers action instead of tools and doesn't want to go to university right now. she belongs to the generation

campaigning for climate protection. but that's not passing. she wants to learn practical skills to protect the climate posts of provide from drinking water treatment, which is softening systems, not so positive our job. and so we might even have a drinking or to shortage in the future. so how can we use raymond wheeler, an old us at school, i'm practically to on the construction site, is quite a few and there's definitely something to be gained from taking to the streets. i'm all for that. but i'm the kind of person who prefers to create solutions with my other times in the shop. most of us today, the 18 year old is 15 ventilation pipes. so far her favorite aspect to the what? because being in customer service, she enjoys educating people, advising them on climate friendly technologies. this is mine, i'm training to be a fun mechanics. assignment tree heating and air conditioning is that's the full name on her instruct to boost and you see shows us the main heating we get to that

with the latest technology. does that stinking with a storage? right? no, that's the buffer time keeps different. yeah. a foot plan to go talk grades at high school, finish finish did fall off. she's chosen this male dominated profession because she wants to make a difference. ready from on to, to even do something to the local environment. and that is if the guy, that's the right attitude to the right. if you can do something yourself on the sites, don't expect others to do it for, you know, the tech is always developing. and this is the next generation, so it's very important, it's up to you and this is every her commitment to the climate has grown. in the 11th grade, she wrote the physics paper on the side table tax and fell in love with renewable images. she's being fascinated by the subject of a sense, spending session and so far would be that right now, construction site, since those being supplied only with heat generated from the ground and does

a young person, it's so amazing to see that you can get heat energy from sources other than fossil fuels to come up, but of course it makes you really have pictures of the one part. the step about parents is that cadet makes a proud of that door to end the path. she's chosen well the is to be less supportive with her, that's much of a select mind. maybe i'll become a mazda trades person, spoke to a degree, her friends got to want to find the most of my friends and studying, but they were actually quite positive about it too. they usually say, okay, i wouldn't want to do the job myself, but we do need people who do so this says both as well to the point where we have no option but to can. now, if i've done just chosen a profession to which she can make the world's best to place the ventilation systems like those the 8th of planned works on becoming increasingly important. the career in

a virus pandemic make many of us aware of just what can collect and not enjoy and keeping in those spaces well ventilated is still vital. an uh, quality measurement campaign as an elementary school in switzerland is a way to go. yeah, it's peno into team from the school of engineering and architecture in sleep. what are installing senses for potentially hazardous pollutants, both inside and outside. the data collected from around 25 switched schools shows a clear problem with the quality of the this is the case in many buildings where people spend time together will be sick. we now know that the variety of pollutants is found in india can have

a significant effect on our house. the monopoly ones is pollutants, has already clearly demonstrated this corona virus. it wasn't so long ago that students were sitting in school classrooms with the tools and windows and several studies show that there were 5 few infections in well ventilated, winston employee ventilated. ones. the pandemic put at quality firmly on the agenda . i'll send you definitely the, the can you send through that into a quality was suddenly a token point student javion. unfortunately, since then people have fallen back into old habits and the lessons learned from cove it and now having little effect. wonder if it was all the ventilation behavior is now knowledge of the back to us. it was before the pandemic, and yet people typically spend 80 to 90 percent of their lives in those schools. can house a high level of pollutants in addition to viruses? c o 2 often accumulates and then, and then with fine dust mode,

schools and different chemicals in many parts of the world re don't, is often also present a radioactive gas submitted from the at the resulting mix. you can be bad for our house, invisible and potentially responsible for diseases such as asthma and cancer in the long term. joanna, go yet depend no sees an urgent need for action. in 2023, the arrow biologist attended the w. h chose 1st indoor at quality conference in them switzerland. it same was to raise awareness and bring decision makers and massages together. that message was k, visualize in the feasible make. in durham are visible. when i go to the ball is it was to me or into twain button, public transportation. i need to know is it an i was safe or not? so i need to see that visible at the conference. the indoor at quality was also

measured encouraging room temperature, humidity, and c o 2 levels. although not toxic and high concentrations, c o 2 can impact wellbeing and the gas is also in indicate of of pathogens if it exceeds a certain amount, an infection becomes more likely as yet that a no binding limit values for c o 2 or other pollutants about the w h o is developing recommendations, and then decision makers, either as country or international. and then those are using them to set standards in mind. there is a complement of the responsibility of the state of decision makers. you said regulation sidney loudly as we have a right to clean water. we also have a right to read clean and we might not,

and we should not come from ice on. that's right. and kind of the centrally pure thought, i'd like to mention every building, even every we should be equipped with systems that accurately measure toxic public tips as well as c o 2 and which ideally automatically exchange yeah. for example, via and mechanical ventilation systems. these need to be properly adjusted, but that's not always the case as the study for free. what reveals. so what was it going out of 11 schools studied almost all ventilation system have very different values, even though they have the same purpose named me to ventilate classrooms of similar sizes with similar numbers of students in the fall to me that on top of this, even well maintained ventilation systems make the very dry, especially in winter, an ideal environment is a virus that sees what programs you succeed. you have to find the right balance

between ventilation and moisture recovery to limit to infections, especially viral infections that there's a fix on the motion. and if you have windows that can be open, it's a good idea to add rooms regularly and extensively of the exhibits and museums that typically protected from environmental damage by being kept in display cases. but the air within these can itself pays a break. now reset to the testing, out of surprisingly simple solution. the festa code book fortress complex in bavaria boasts of valuable glass collection including unique's, right glosses from the renee songs and precious claw square from the 16th century. the collections conservatives have done everything they can to preserve these

treasures, which it's most enough display of drinking glass contains fine. mike cracks is this clause is this cost is about a 150 years old and it's being damaged by formaldehyde. this is, this is one of the main guesses that we have to contend within the museum wells. this damage is caused by the depletion of substances, the to dissolved out of the gloss resulting in these micro credit exclusively and or some loss and others interesting to be closer. what's challenging is that the home full substances are in the arrows. the display cases, they come from a t sips, for example, or textile coverage. now, scientists from zoned on to university of come up with a simple way of killing the pollutants by using salt solutions. these are made up of water and various thoughts like potassium carbonate or potash. it's nonsense, that's because i think this as will depend on this assault solution, such as potassium carbonate to be placed discrete in display case in the should

then absorb pollutants. so for a long period and protect the exhibits, acetic acid gas is a pollutant that can damage museum exhibits. or if i please choose colleague, want to show how potassium carbonates can render this homeless. the tube of all this represents the meaning showcase is the one on the right to contain means the potassium carbonate salt solution. the one on the left contains via as soon as the a c take nastic gas is injected. the gas concentration in the patrol is rises. right, and the buffalo with the salt solution, flew in the bottle containing time. then it's time to wait a few minutes. but it's interesting, i'm sure you can see quite nicely here that within 2 minutes the potassium carbonate has taken most of the a c take acetate out of the demo victory in the example below. you can see that the

a c to cast it is still in the yeah, leaving it to damage the exhibits. so how does it block the polluting gas flows into the mini between the attractive forces and the water molecules drew a large number of a c to acid molecules into the salt solution. the potassium carbonate mendez, many of them homeless through a chemical reaction. this leaves space in the salt solution for more as a home full gas, which continues to be attracted to some of the a c to acid molecules escape and turn into gas again. but then the drawing backend over time, the process comes down. then almost all of the home full gas is dissolved and the liquid and the longer poses the risk. the next step is to place the sol solutions in display cases that are over 60 museums in the festa. co book is one of those museums, keen to put the salt solutions to the test. the museum is a special case. for the past 2 years, it's been using

a salt solution will be its magnesium chloride. that smells effective against pollutants such as a c to cas 8 or formaldehyde no has not been mismatched. but it is against damage caused by moisture in the display case. at which kite had the face moist it has the ability to draw all components out of the gloves. if you don't do anything about it over time, the cracks will run through the entire loss and can cause it to fall apart to inductive glass of some of it. to avoid this, the humidity and the display cases must stay at a fixed level. something the magnesium co ride had previously insured is very human death flows into the display case and somehow it reaches the magnesium fluoride salt solutions through the cracks. a large number of water molecules are solved from the yeah, into the salt solution. the add becomes dryer until this

a constant humidity of 33 percent. if the air is very dry, winter moisture levels drop in the case, then many water molecules evaporate until the humidity returns to 33 percent. a simple and effective regulation system now have a flush, a lot of things. however, recent research has shown that 33 percent is actually false, too low, especially for unstable and sick class to. so we looked for other salts that could keep humidity at around 43 percent, and found potassium carbonate could do that. it's much better to sit gloves you best so. so potassium carbonate solution can rent a damaging gas is harmless, and also ensure constant humidity. this is important for many exhibits. the salt solution is also easy and inexpensive to produce, making it perfect for small museums with limited resources. high not

agree, but now replacing the museums, magnesium, chloride solutions with new ones made from potassium carbonate. he's came to from down, which is the optimum humidity level in the display case that really remain stable at the moment. humidity is it. 69 percent decides is is over the next 6 weeks, the potassium company should reduce the relative humidity to 43 percent. and connected to 4 to 6 weeks late to the humidity in the showcase. uh, is it a constant? 42 percent with us and that's a super result. the way more than happy with it doesn't get any benches and that search engine to ensure that the display case treasures are preserved, as well as possible to 8 museums in germany and 24 across europe. i'm the us and now testing the sold solutions the pump set from

us this time on the w science side. thanks for joining us and see you again soon on tomorrow today. say curious, the

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