Science Max | BIG EXPERIMENTS

why were pendulums used in clocks well here's why let's mark every time the pendulum hits the bottom of the swing right here okay watch all right now here's the question how fast will the beeps be if i swing it from much higher up let's find out no matter how high the pendulum swings it keeps the same frequency that's why they were used in clocks because it could swing for a long while and even though it would lose energy it would still keep perfect time the frequency of a pendulum doesn't change no matter how high it swings or how much weight is on the bottom the frequency comes from how long the line is now this is a pendulum wave [Music] because each bowling ball has a line that's a different length they have a slightly different frequency they start out swinging together but soon they start to make interesting patterns remember each pendulum is keeping its own perfect time even if it's slowing down it's only the length of the line that gives each pendulum a different frequency and now we're gonna max it out with with um well i guess these are already bowling balls so this is already pretty maxed out i'm just gonna i'm just gonna leave that there these are balloons this is a laser and these are awesome laser safety glasses now lasers are made of light and light has a frequency in fact each color of light has a different frequency this is a red laser check it out yeah cool this is also a very powerful laser oh i can pop the blue balloon with the red laser because the blue absorbed the red light from the laser and then it heated up and the balloon popped but here's the cool thing i cannot pop a red balloon with a red laser because the red balloon reflects the red light from the red laser and i can't pop it if i wanted to pop a balloon with a red laser i need to use a darker balloon one that absorbs the red light like like a black balloon so there you go lasers frequencies of light i'm gonna i'm gonna keep this red balloon because it's always nice to have a balloon [Music] chris and i are maxing out the vibrobot but our last version shook itself apart now the plan is to start with something more solid and try again we found some very solid steps and added an even bigger motor an even bigger battery and attached a half circle wheel to make the vibrations when the motor spins we add some paint brushes and fire it up here go come on go home by robot it wants to move is it moving at all hmm so it's still not working it's already getting caught in the paper and it's on the paintbrush yeah the paint brushes seem to be absorbing too much vibration and then the paper's stopping as well so why don't we remove the paint brushes yeah and we might as well remove the paper if we don't have any more paint brushes yes and we'll see what happens okay no paint brushes no paper okay now let's try it three two one go yeah aha it's moving not bad the shaking is good but i don't know if the shaking is enough so what do we do well we could add another battery another battery which would give it more power that's right okay let's try that okay okay so it wasn't working before no not enough power and now we've got a second battery here that's right we've wired them up so that one power feeds into the other so we've got twice as much juice so it's just a matter of clipping this onto there that's right but hold on yeah safety glasses because now we don't know what's going to happen anymore ready three two one the extra battery makes a big difference the new vibrobot shakes around and only shakes itself apart a little all right that was amazing okay so all we needed was more power that's right i think it didn't have enough power to vibrate up and down and that's why it wasn't moving every time hit the ground so i think if we're going to use this much power i think we need to build it again okay build it even stronger and with a bigger motor yeah and more power and then maybe i ride it you think we can build that of course of course okay let's do it [Music] oh anthony phil so i was wondering if you could help me with an experiment i want to generate as much electricity with human power what do you think i think that sounds awesome okay great let's go back to science max headquarters is that the portal yeah don't worry all the kinks are worked out i know what it is it's this ah where did you end up i was in the vents oh i ended up in the bathroom all right well now that we're here okay so this is what i started with and this is uh just you know an electric motor right right um so you can generate electricity you spin it so i figured in order to generate more electricity you get a bigger generator exactly yeah the bigger the generator the bigger the magnet the more the copper the more the electricity oh well you know what we should do is we should just get an even bigger one like a giant one that they use in like in a power plant or something or not quite that would be too big for a person to be able to turn it'd just be impossible so you think this is a good size i think this is a great size okay so that's that's good this is called a multimeter we're gonna hook up the wires i'll do black to uh black black to black the red and as you turn our generator we can see just how much electricity we're generating okay so here you hold on to that and i'll start generator now it's time to play how much electricity did they make 2.4 volts yeah it's not bad oh 2.4 yeah it's not great that's just enough to power a small led flashlight better keep trying boys i got some handles here that we're going to attach to the end of the generator so we can spin it okay let's try huh no matter how fast i cranked the large handle i couldn't make any more electricity than before okay let's try something else but it's a smaller handle perfect okay yeah that's good yeah well maybe it'll let us get more spins in oh yeah because i don't have to make as big a circle exactly yeah it's working already we're upset like 3.5 now how much electricity is filmmaking 4.5 that's the same as three double-a batteries maybe enough to power a toy car still a long way to go yeah it's it's a lot higher with the faster spins oh all right all right you okay i'm okay maybe we could use like some gears or something like that oh yeah you know that's a good idea because the the this circle that i'm making here i can only go so fast yeah maybe with gears you can do one circle here equals like 10 circles on the other gear exactly yeah okay so kind of like like the gears on on like on like a bike yeah the gears on a bike or something like that a bike of course yeah so okay so we get a bike and we attach the back tire to the generator the generator and then you can use the pedals of the big gear to power the small gears okay great we'll go get a bite yeah yeah high five all right oh right they're over here so ann and i have made a large shaker table now it's just a matter of designing a building we use lumber and cut it up use screws to attach it all together put a platform on top for a weight and attach it securely to our shaker table the building is super simple just four corners and a few planks around the outside no structure in the middle and finally the big heavy weight on the top there we attach a pole to the shaker table so we can shake from a safe distance and try it out okay very slow forward let's see how much shaking it can stand with our shakeometer that seems to be okay we barely start to shake our tower before it collapses oh that didn't really last very long did it completely fold it up on itself uh what do we do to fix this make it better i think the easiest thing we can do is to use thicker wood it'll make it less wobbly okay sure let's make another one high fives we do have lots of wood that's a good thing ann and i are trying small improvements every time there our last building used thinner pieces of wood now we're using thicker wood which we think will help keep the weight at the top from collapsing the building everything else about the design of our building is the same we put the weight on top and fix our pole and we're good to go all right you [Music] ready it recovers you can see it lean and then it comes back and it resets definitely doing better than the last one oh no i'm impressed i definitely did better than the first one it did better than the first one and the thicker wood definitely helped but it was really starting to turn i think on the next one we need some platforms in the center to help strengthen it even more earthquake building 3.0 thicker wood this time but with platforms in the middle so we're going to see how well this version works with these middle parts that'll hopefully reinforce and they're just like the floors of a building okay well let's find out if it's going to make any difference starting to wobble a little but it looks pretty good as soon as we start shaking it's really obvious this building is more solid uh-oh starting to creak oh it's really starting to creak the platforms in the middle really seemed to improve the structure you can see it bend all the way over and still recover but still it wasn't long before really starting to lean wow the extra pieces really kind of made it more impressive it definitely lasted a lot longer than the other two it did but here's what i'm wondering are we going in the wrong direction what do you mean well because if it's really solid it resists the change okay i see where you're going with that so if we make it flexible it can resist the shaking of an earthquake i think it's worth a shot yeah okay let's do it

Channel: Science Max - 9 Story

Views: 1,013,602

Keywords: Science Max, Experiments, Science, Awesome, Awesome experiments, Home experiments, educational, tvo

Id: zQ_OgasNUFw

Length: 11min 8sec (668 seconds)

Published: Thu Dec 12 2019