turn their backs on democracy. and what does this mean for the upcoming next? the enemy within the us to lie 12 on the w, 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. welcome to dw science shape the . the object that's crushing down here comes directly from the stratosphere. it's

the result of months of preparation by students that this old 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 crew into the stratosphere. everything's being planned and built here and include some age appropriate props. as we've started the chocolate marshmallow on that with super glue so that we can see how much it expands in the. yeah, the emphasis on practical work makes the learning relaxed, almost effortless in on 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 help that and what will happen to the pop was when they're out there hasn't been to say,

i've always been interested in once. it looks like up that what the us looks like from above to me. it's just, it's kind of fascinating 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 to nancy's responses from what we've learned most is how much fun it can be. authentic, i'm the gums, noisy other devices in a really curious way. what's interesting, so see a 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 what 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 people's fault and the physics is so relevant to everyday life out of time, 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 watched countdown time the balloon rises rapidly. soon it's no longer visible. and then people's students, teachers, parents,

the chase is own land very exactly about that. and then the gps transmit to temporarily fails. what is the pro, the loss of time in the balloon is full cost to land in a nearby town which was an oil. that's all the blueness mandate out that there in the tree of the top left the did it guys in out. victorious ending was about the house, the most, my dad, it looks a bit slow, the, the highlights analyzing the camera footage the,

the that, that's also cool. really cold desktop the radiation measuring device has had enough because too much radiation. that's what was be paying now. yes, it reached its daily maximum doves on the desk. 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 the i'd say we achieve what we wanted to achieve as the polluting maintenance stuff. a few weeks later, a debrief, obtained altitude. 34602 mates has 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 evaluated what we already have. they're gonna ask about the assignments when we were a great, great, and had fun. we were interested in the solve the task force. we were given really well set time with good news, which just shows that education can be simple when it's fun. face trouble is another male dominated environment to date, just 12 percent of our students have been women. and yet to study by the european space agency reveals that women a fallback to suited to space travels and mat they have more efficient metabolisms and consume fewer resources. including space pools on demand o l. v e from mexico has sent us an interesting question about the topic. how

is it possible for astra notes to do space books are working outside a station or vehicle in space is by it's difficult and dangerous. it's extremely cold. where the i assess obits and there's no human beings would perish after just 30 seconds out. that astronauts can only survive in space wearing special seats, which are effectively like small spaceships. a rock sank, supplies them with add to breeze, and also removes exiled carbon dioxide. the seats have several layers, they need to be gas tight and with stunned excess pressure. the outlet is made of fire retardant. catalog coated with a menu of the suits protect against the vacuum as 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 work 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 of gravity balance each other around. it travels 7 kilometers per 2nd, the astronauts and moving at the same speed. but they didn't notice it. physically speaking, outside the station there in their own little bit. even a tiny cushion movement to come to this old bitch and caused them to drift away that the up guess that i still have already lost they wouldn't be able to return in that room. that's why the extra notes that

tended to the spacecraft at school programs in 1994 nessa tested special get backpacks. these with develop submissions were asked to notes, have to move far away from the spaceship. for example, to capture stuff to lights, the in an emergency astronauts can ignite this thrust as to stabilize that position and then return to the ship the during extra the hit killer activities on the i assess astronauts to secured with to kansas. the designs of attached to poles and candles, which the astronaut seems to move around when they change position, at least 110th mis ways be attached for 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, storing your questions, do you have one 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 off when it comes to choosing an apprenticeship in germany, goals typically up to train is assistance and the business or medical sexes. boys tend more towards mca tronics will become electricians. career choices are still very much shaped by stereotypes, but it doesn't have to be the way 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 . pulse of provide drinking water treatment, which is softening systems, not sol,

positive on the job. and so we might even have a drinking or to show, teach in the future. so how can we use ramos? we learn all that's at school. i'm practically too well in the construction site. there's plenty of you and there's definitely something to be gained from taking to the streets. i'm on the full back, but i'm the kind of person who prefers to create solutions with my other times. and each 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 boozy and you see shows us the main heating we get it out with the latest technology that spring came over to storage. right? no, that's the buffer time keeps different. yeah. a foot plan to go talk grades at high

school, finished and fall off. she's chosen this male dominated profession because she wants to make a difference. ready so i'm on to, to even do something for the local environment and that is, if you guys to, that's the right attitude, 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 that. so this is at least her commitment to the climate has grown. in the 11th grade, she wrote to physics paper on the side table text 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 to how does a young person. it's so amazing to see that you can get heat energy from sources other than fossil fuels to come out. but it makes you really have pictures of the

one part, the stuff about parents that makes a proud of that door to end the path she's chosen. well, the is to be less supportive with their thoughts. friendship like my, maybe i'll become a mazda trades person, spoke to a degree her friends got to a lot of fun to most of my friends are 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, this says bruce, this well to the point where we have no option but to can. now, if i've done to chosen a profession to which she can make the world best to place the ventilation systems like those the 8th of planned works on becoming increasingly important. the career and a virus come demick, make many of us aware of just what can collect and not into and keeping in those

spaces well ventilated is so vital. an ad quality measurement campaign as an elementary school in switzerland is a way to go, you know, into team from the school of engineering and architecture in sleep with our in storing 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 was all to be sick. we now know that the variety of pollutants is found in indo ac and have a significant effect on our house. the monopoly ones pollutants has already clearly

demonstrated this corona virus. it wasn't shown on the guy that students were sitting in school classrooms with the doors and windows, and several studies showed that there were 5 few infections in well ventilated rooms. they didn't pull events, natured ones. the pandemic put equity firmly on the agenda. i'll send you definitely the, the can you send through that into at quality was suddenly a token point student again. unfortunately, since then, people have phone and 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 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 pumps of dwelt re don't, is often also present

a radioactive gas semitic from the the resulting mixed. you can be bad for our house, invisible and potentially responsible for diseases such as asthma and cancer in the long term to let it go, yet pen 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 for such as to get the, the message was clear, visualize in the piece of may. 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 air 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 an indicator of pathogens. if it exceeds a certain amount, an infection becomes more likely as yet there were no binding limit values for c o 2 or other pollutants. about the w h o is developing recommendations . and then decision makers, either at the country or in there, national know that those are using that to set standards in my series to confirm that the responsibility of the state of decision makers, you said regulation sidney loudly as we have a right to clean water, we own so have a right to breathe clean and we might not, and we should not compromise 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 because the study for what reveals to all that go out of 11 schools, studied almost all ventilation system that have very different values, even though they have the same purpose. namely, to ventilate classrooms of similar sizes with similar numbers of students as a normal don't forcing me to. on top of this even well maintained ventilation systems make the very dry, especially in winter, an ideal environment for virus that sees what over how's you succeed? you have to find the right balance between ventilation and moisture recovery to limits, infections, especially viral infections. it is not fixed or not that motion. and if you have

windows that can be opened, it's a good idea to add rooms regularly and extensively the exhibits and museums that typically protected from environmental damage by being kept in display cases. the within these can itself pace of right now reset to is a testing out a surprisingly simple solution. the festa code book full access complex in bavaria, boasts of valuable glass collection, including unique's red glosses from the renee songs and precious cloths where 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. 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 content within the museum was this damages caused by the depletion of substances. the to dissolved out of the gloss resulting in these micro credit was curious to know some flaws and others. interesting. because as a, 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 solange university of come up with a simple way of killing the pollutants by using salt solutions. these are made up of water and various soaks like potassium carbonate or potash plants and stuff. 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

a c take message, gas is a pollutants that can damage museum exhibits. or if i please choose colleague, want to show how potassium carbonate can render this homeless. the tube of folders represents the many show cases. the one on the right contains the potassium carbonate salt solution. the one on the left contains via as soon as the a c take, nasa gas is injected. the gas concentration in the patrol is rises right in the bottle with the salt solution. flew in the bottle containing time, then it's time to wait a few minutes. once he gets sick, 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 treatment. in the example below, you can see that the casting is still in 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 vendors, many of them homeless through a chemical reaction. this leaves space in the salt solution for more as a home full gas to which continues to be attracted to some of the a c. take 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 for gas is developed and the liquid and no longer poses the risk. the next step is to place the solar solutions in display cases that are over 60 museums. 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 it's magnesium cool, right?

that's the most effective gates pollutants, such as a c to capsulated or formaldehyde no has not been researched, but it is against damage caused by moisture in the display case. at 1st kite had the phase moist. it has the ability to drill components out of the glass, or if you don't do anything about it over time, the cracks will run through the entire class and can cause it to fall apart to inductive class, we'll send a method to avoid this, the humidity in the display cases must stay at a fixed level, something the magnesium fluoride had previously insured. is very human death flows into the display case and some of it reaches the magnesium fluoride salt solutions through the cracks. a large number of water molecules of absorbed from the into the salt solution. the ad 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 with tons to 33 percent. a simple and effective regulation system. now i am flush a lot of things. however, recent research has shown that 33 percent does actually fall to 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 and cut off the best so. so potassium carbonate solution can rent a damaging gas is homeless and also ensure constant humidity. this is important for many exhibits. the salt city sion is also easy and inexpensive to produce, making it perfect for small museums with limited resources. heineken eve is now replacing the museums, magnesium, chloride solutions, with new ones made from potassium carbonate. he's keen to find out what the optimum

humidity level in the display case, a really remain stable at the moment. humidity is a 69 percent disorders. it's over the next 6 weeks, the potassium carbonate should reduce the relative humidity to 43 percent 6 and connected to 4 to 6 weeks late to the humidity in the showcase. uh, is it a constant? 42 percent with us just and that's a super result. the way more than happy with it doesn't get any but has a nice to ensure that the display case treasures are preserved as well as possible . $38.00 museums of gemini and $24.00 across europe. and the us and now testing the sold solutions, the subset from us this time on dw science. i. thanks for joining us. i'm see you again soon on tomorrow today. stay

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