okay i want to start now talking about aviation there we go my timer set and talk about the third great uh development change in the 20th century aviation remember that the steam engine really helped with the car industry this is basic technology changes to internal combustion engine it's not that far of a stretch to say we could put an engine in an airplane so that you could not only float you could fly that's going to be important this here is of course my vacation pictures that of uh kitty hawk this is where the wright brothers in north carolina are going to fly their airplane not a great image but you can kind of see how it is flat flat flat flat on top of this though is so windy perfect for flying an airplane and this is where they're going to discover how to fly an airplane this is my daughter now this is a couple years ago and this is a replica of the airplane and how how it works and this is a place that everybody can go play we happen to be early in the morning we kind of climbed over the gate uh and it was kind of cold uh it was during spring break but it was kind of cold and so nobody was around perfect time to go places i like going somewhere where there's nobody if you're interested in writing learning a little bit more about the airplane uh here is uh the american experience by david mccullough uh the wright brothers the right stuff the wright brothers there's lots and lots and lots of these shows and we're on spring break right mine or spring break quarantine break whatever we're on you might as well try to watch some great shows out there right but rather than talk too much into it i just wanted to emphasize the consequences not just for war and how war changed and it really changed beginning with the first world war and even more dramatic during the second world war with carpet bombing uh here in order to create uh useful use for an airplane in the 1920s then we're going to create a map like this one here this is a map in which you can actually go from one side to the other side especially for air mail to drop mail off right how are you going to do this well they're going to have these arrows made out of cement and then they would have little shacks and a person in the shack that would be in charge of making sure there was a gas light that was always lit so you could go from one side to the other side think of how this has shrunk the globe kind of like before this is kind of the same uh area as the uh what you call the railroad but now it's shrunken even farther it's amazing so this leads to even greater government regulation not justified wars this is charlotte and when charlotte is actually running at full peak that's what all the flights into charlotte look like imagine that over the whole country it would be one solid red you need increased government regulation after 9 11 there's going to be even more multiplied with the department of homeland security when i was a kid you could actually walk right up to the airplane it was awesome now you have to like get a whole body cavity search in order to get on the plane is much different thanks to the uh and organizations needed such as the federal aviation administration so that was number three it was very short the rest of these are short i'm trying to get through this without boring you to death the fourth one is domestic technologies and one of the questions i put on the last test was what was the domestic revolution uh and i thought it was an easy test question but evidently it wasn't the domestic technologies lead to a technological revolution of the household the domestic revolution that i'm trying to get at is how life changed in the house all these things for example before you had no carpet but once we create the vacuum then all of a sudden especially the hoover vacuum all of a sudden the hardwood floors are being replaced with carpet floors which is ironic that this last summer we replaced our copper floor with hardwood and i was thinking uh we're going backwards in history here that's true vacuum is one of the most important thing or washing machines the top left there i would actually wash my clothes when i was living in brazil by hand it took hours and it was just my clothes imagine if you had a whole family of people that um whole family and you need to wash all of the clothes that would be difficult you would not put your clothes in the dirty clothes basket that's what we call i don't know what it is um in the laundry basket until they're really dirty because you know that's a lot of work to wash still but now this domestic revolution involves things that used to be done by hand that are now going to be done by machines thanks to that electricity and energy that we now have dishwashers at the first dishwasher i got not standing old my wife and i put it in built a little area in our first house this is 25 years ago and put it in and it was amazing it was awesome washing machines dryers um one of i saw one of your my colleagues you know drying their clothes outside using the sun like well that does save energy right but i have a dry i'm just gonna throw the dryer because i'm lazy and evidently i'm not a good green thumb person or tree hugger or whatever electric or gas ovens we have electric microwaves oh and microwaves came about because i remember we could not look in the microwave because we were told we'd get cancer and die go blind but i'm still not blind but we always looked anyway that changes the way you cook things a couple of your classmates wrote on microwave i love them toasters that was like the thing everybody wanted refrigerators i need a new one uh i mean my my parents my parents remember their very first refrigerator and how cool it was we went to a museum and i saw my first refrigerator and my kids are like oh my gosh look how old it is i'm like that was mine i had one exactly like this like oh wow freezers vacuums i know your vacuum probably sucks vacuum sucks uh cd or mp3 players one of the things i thought was interesting is when i was in graduate from high school uh the cd players came about and uh my uh i told my wife because we were dating at the time we were in high school and we were walking through kmart if you remember kmart and they were selling these cd players and and cds and like these will never work they get scratched so easy but then my dad said you should get this because i had some money so i bought one it cost me uh 120 and that was cheap at the time you know it saved up for this 120 uh cd player and then when i went to grad school all of a sudden you had all sorts of different technologies smaller cds and bigger cds and all sorts of things until finally you get the mp3 player which i think is amazing you know i listen to so much music now on here i'm getting off track and then of course tvs thanks to some people in idaho uh if you've ever been to idaho you'll know there are lots of potatoes and nothing else no wonder they invented the tv although if you go to the utah museum of the state capitol they claim that they created it i'm like how do you even say that and all sorts of these new technologies lots and lots these are labor devices have they created more or less work are standards of cleanliness impossible to maintain let's do a test next time we can actually leave the house and you've been out for a while call your mom and say hey mom or dad hey mom uh me and a bunch of friends are gonna come over there and she'll say now yes i'll be over five minutes no you can't just come over you gotta warn me first i gotta clean up right we have this standard of cleanliness that is just whoa amazing we have to maintain oh well that's domestic revolution and i could talk about that forever but i don't want to number five i love being entertained and now more than ever i love to be entertained of course i'm mostly entertained by a new technology called audio books by the way in which you can listen to as many books as you can possibly have time thanks to online library cards and library apps i use one called hoopla is that what it's called i think it's a hoopla i guess so many anyway number five is entertainment the uh radio cinema and tv is the ones i'm talking about today the radio uh was invented in the 19th century by henrik hertz that created electromagnetic waves then the marconi uh was uh a wireless telegraphy and that's the one that most people in the throughout the 20th century referred to uh have a marconi machine what the heck is that that is a wireless radio uh is going to be improved upon the in 1906 the adion vacuum tube i'm sure i'm slaughtered adrian marion vacuum tube and then we all of a sudden have radio stations my brother was just texting me and talking about his radio station of his classical music and how they're doing things now that they're under quarantine i'm like i never thought about that that's interesting i don't know the very first radio station was kdk pittsburgh 1920. so if we have a radio station how do you get the radio signal i mean you can buy a radio from the store from sears and robot catalog especially but how do you get the signal do you a have it to be free you turn on the radio and it just everybody can listen to the music it doesn't cost or do you pay like a uh directv or like um cable tv right do you pay for a service and unless you pay for the service you don't get the radio those are the two questions well bbc 1922 they said you paid for the service it didn't last long and pretty soon anybody could get the bbc and the united states with nbc 1926 says no it's free but the the catch with it being free is that it has to have commercials especially soap opera commercials right a lot of the these shows that people would listen to and they would listen to an average of four to six hours a day that's a lot of time because you have to sit there and listen to it i mean you could do like folding clothes or something but you had to bring it to the radio because it was so big now i know i listen to more than that and buy books on tape a day but i'm drawing or i'm driving not lately driving or doing something else right in fact that says here i have an average of seven hours a day of screen time like that's because i listen to a lot of radio and i use it to draw and i just put it out there and i just cop you know draw stuff who cares by the 1930s oh anyway so it's free for us although we have lots of commercials of course that has changed thanks to satellite radio i don't have a satellite radio i tried it but i got a new car so excited to use it and it did not have a satellite radio in it i'm like what the crap so much for that free service for three months anyway in 1930s three out of every four americans had a radio the last thing people would get rid of in the 1930s during the great depression was their radio anything else was fair game but not their radio that would be like your phone the last thing you'd probably get rid of if you lost your jobs and everything is your cell phone they're your touch on reality or escapism it's weird though because if you heard it on the radio it was true you should go on youtube or somewhere and listen to war of the worlds and everybody believed that the martians had landed this is going to be a political statement too as if you heard on the radio it's true so adaf hitler and mussolini and even franklin d roosevelt are going to use the radio in order to get propaganda into people's homes by 1950s there are two radios for every american home when i was a kid there's even more radios in the 1970s now of course we actually don't have that many radios but we have a ton of uh iphones and gadgets to play music and everything else just not actual radios i have one it's my emergency radio just in case but i never use them i don't even know if it works it does but i don't use it anyway i'm almost done the second part of this is going to be the cinema cinema is going to be just as important although initially it's going to be um silent films and then it's going to get much much uh more different films