shit, no, because i trust the number keeps you because there's only 4 to technical church, 3 generations. one jenny starts july 7th on dw, the out of the 225 windows if the nobel prize in physics just fine for women. in fact, women under represented generally in the subject in western countries in particular, there were found fewer 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 structures fair.

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 yeah, the emphasis on practical what makes the learning relaxed, almost effortless, later on in his own, a weather balloon, a probe a power shoot. it's really swelling, so i'm very excited now. tense, i toss fund. i found it really exciting the topic. and what's it looks like up that i'm what will happen tool the was when they wrote that hasn't been to say,

i've always been interested in once he looks like up that what the us looks like from above to me it's just a kind of fascinating me i think going to move sky top, everything's assembled full, measuring devices there on board, the gps track, a 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 and my mom back to nancy's response, that's what we've learned. most is how much fun it can be authentic, i'm the gums, know ideally, 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 well, keeps science. we're doing an educational project. and at the same time we're learning about the composition of all right,

ms. vega. and 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 time. also in situations which you 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 time the balloon rises rapid legs soon, it's no longer visible. and then people, students, teachers, parents,

the chase is own on the atlantic direct. exactly about the then the gps transmit to temporarily fails. what is the prob, last time in the balloon is full cost to land in a nearby town. what's this noise? that's all the blueness mandate up the bear and the tree at the top left. the did it guys in out, victorious ending? what's not the house the most? my deb, it looks a bit slow. so 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. mm hm. that's what was be paying now. yes, it reached its daily maximum dives on the desk. i find that in physics, you just discover things. i don't think you really teach it, you experience it yourself. and that's what i think we did today. on this i'd say we achieve what we want you to achieve as the maintenance shop. a few weeks later, a debrief, obtained altitude surgery, 4602 mates is a 2 and a half hour journey into the stratosphere and a high speed return. when in missile some of the measurements what well others less

. so that's just how it is in physics. we're still working to save a couple of the day to set in today. we evaluated what we already have looking at. 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. 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 fall back 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 that topic. how

is it possible for astra notes to do space books or working outside of station or vehicle in space is by difficult and dangerous. it's extremely cold where the i ss little bits and there's no human beings with terry shelf to 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 might play. meteor rights and solar radiation special underway would choose to which cool water flies prevents the aspirin notes from overheating during best strenuous work as to trains of space missions in special swimming pools

like type is that more than 100 killer heavy suit substituted with whites, which allow them to select corresponding to the conditions in the international space station is a waiting list environment. this is because it group, it's the so fast that centrifugal force and gravity balance each other around. it travels 7 kilometers per 2nd. the, the astronaut. it's amazing at the same speed, but they didn't notice it. physically speaking, outside the station there in their own little bit. even a tiny kush lives meant to come to this old bitch and caused them to drift away like 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 that space craft at full dreams. in 1994 nessa tested special get backpacks. these with develop submissions where astronauts have to move far away from the spaceship. for example, to capture stuff to the lights, the in an emergency astronauts can ignite this thrust as to stabilize that position and then return to the ship, the cheering extra, the hit, killer activities on the i assess astronauts as a kid with 2 testers. 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 close on the right bus,

take home to the deployment sites. special platforms for that fee to help them securely in place. we low phones are in 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 goes typically up to train is assistance in 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

posts of provide from drinking water treatment, which is softening systems. that's all part of our job. and so we might even have a drinking or to show, teach in the future. so how can we use raymond wheeler? i know that's at school. i'm practically to on the construction site. there's plenty of, you know, there's definitely something to be gained from taking to the streets. i'm all a full about them, but i'm the kind of person who prefers to create solutions with my other times. michelle. most of us today, the 18 year old is 15 ventilation pipes so far her favorite aspect of the work has been 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. that's the full name on her instruct to boost and you see shows us the main heating way it's about with the latest technology. does that spring came with a storage, right? no, that's the buffer time kits. 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 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 in those bar will be there in our construction site since those being supplied only with heat generated from the ground out does a young person. it's so amazing to see that you can get heat energy from sources other than fossil fuels to come to,

but it makes you really have pictures of the one part of the stuff about parents. right? is that cadet makes a proud of that door to end the path she's chosen. well, the is to be less supportive with your thoughts. like mine, 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 esna's 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 made many of us aware of just what can collect to not endure

and keeping in those spaces wells and selected is still vital. an uh, quality measurement campaign as an elementary school in switzerland is a way to go. you had to peno into team from the school of engineering and architecture in sleep with are 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 on those old 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 ones that pollutants is already clearly demonstrated

this corona virus. it wasn't so long ago that students were sitting in school classrooms with the doors and windows opened. several studies showed that there were 5 few infections in well ventilated rooms, that employee ventilated. ones. the pandemic put at quality, firmly on the agenda. i'll send you personally do that. 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 one to see what 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 parts of the world, radon is often also present or 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 kemp. sit in the long term to let it go yet know 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 clear, visualize in the feasible make. in durham are visible. when i go to the ball is it was to me or into twain button, subject consultation. 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 of i'm not toxic. in high concentrations,

c o 2 can impact wellbeing, and the gas is also an indicator of, 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 to mention that those are using them to set standards in mind, there is a component of the responsibility of the state of decision makers. you said regulation sidney loudly as we have a ride to clean water. we also have a right to breathe 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 in 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 what reveals to all that good out of 11 schools studied. almost all ventilation systems 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 on the fonts. 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 your success? you have to find the right balance between ventilation and moisture recovery to limits, infections, especially viral infections. to this i fix you on the motion and if you have

windows that can be open. 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. a split the air within these can itself pace of right now, reset just a testing out a surprisingly simple solution. the festa code book fortress complex in bavaria boasts of valuable gloves 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 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 that dissolved out of the gloss resulting in these micro credit was curious to know some loss and other 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 plaza 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, acetic acid,

gas is a pollutants 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 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 book told us rises rate in the bottle with the salt solution, flew in the bottle containing time we spend it's time to wait a few minutes. let's just take, 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 here in the example below, you can see that the casting is still in the yeah, leaving it to damage the exhibits. so how does it work? 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 for gas. so 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 full gas is dissolved and the liquid and no longer poses the risk. the next step is to place the solar solutions in display cases at over 60 needs 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 it's magnesium, chloride. that smells effective against pollutants such as

a c to calculate 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 for the pot to end of class. we'll send a method to avoid this. the humidity in 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 some of it reaches the magnesium fluoride salt solutions through the cracks. a large number of water molecules that 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 and 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 have a flush, a lot of other things. however, recent research has shown that 33 percent is actually false, too low, especially for unstable and sick class to. so we look to other salts that could keep humidity at around 43 percent, and found a potassium carbonate could do that. it's much better for sick gloves you best so. so potassium carbonate solution can rent a damaging gas as homeless and also insure 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. heineken eve is now replacing the museums, magnesium, fluoride 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 it? 69 percent decides as it's over the next 6 weeks, the potassium carbonate should reduce the relative humidity to 43 percent and connected to 4 to 6 weeks later. the humidity in the showcase. uh is it a constant? 42 percent with us and that's the 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. i'm the us and now testing the sold solutions, the bounce it from us this time on dw science. i. thanks for joining us. see you again soon on tomorrow. today. state

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