Lesics（おすすめch紹介）

Microwave Oven | How does it work?

(c) Lesics　Microwave ovens have an interesting physics behind them. Let’s explore the complete physics behind the microwave ovens in this …

This is so interesting when you’re not “forced” to learn it

Fun fact, it was not a chocolate bar that melted in his pocket, it was actually a nut bar. Whereas chocolate often melts in your pocket anyway, nut bars don’t – that’s how he realised that something weird was going on

It’s kinda unbelievable that friction exists at a molecular level. Really, interesting way of explaining. Thanks for that.

Very clearly explained.. wish all schools and colleges should have this type of teaching style

I was heating hotdogs in the microwave a while back, and the first time they came out still cold (this one doesn’t have a rotating plate). I put them back in, but this time rotating the plate 90�. Left them in for the same amount of time, and bam. Steaming hot. I was so baffled about this ever since. Now I know it had to do with hot spots from the micro waves. Thank you.

My older microwave malfunctioned once and didn’t turn off when I opened the door. My hand closest the microwave felt like the hair was standing up. Didn’t hurt or anything. I turned it off after a couple seconds I realized what was happening. Years later they had to cut off my hand due to massive deformities. Kidding.. nothing happened.

Good video. You should’ve covered the wavelength size of the 2.45 ghz vs cell size of the metal seethrough mesh of the front door, that would be a good explanation why microwaves cannot penetrate that mesh. Maybe even cover induced harmonics in it too just for fun.

Really Love the video, very informative, can imagine how much hardwork went into the animation and stuff, thanks guys for making a normal person more educated, specially in concepts that touch upon our daily lives. 😀😀

Awesome 👌 You simply made us understand each and every term of microwave… in very simple language.Thank you ❤️

Thank you for the good explained video. Some things were unclear to me:Does the microwave works only with water molecules or with any other fluid with polar molecules?What is the effect of higher/lower frequency/wavelength on the transferred energy? Does it have a similar influence as the amplitude?

Pretty informative and pretty well explained; apart from perfectly didactic. Well done…!!!!Good job here!!!

even first-grade students can also understand easily. Your seamless teaching style is assisting millions of students. I do respect your hard work, determination and teaching style

This is how things should be taught! One of the best, most informative, easy-to-understand videos I have ever seen.

Fantastic video 😊👍The animation made it more easier to understand such a complex working of microwave.

Explained really well.Highly appreciate the effort for making the video!!

Your efforts in making these explanatory videos are incomparable Thanks a lot

Thank you for not having cheesy background music in the video. It can be such a distraction. Loved the video!

You should have explained the Mesh on the window.It is specifically designed so the electromagnetic wave can’t get out.It does that, by having holes of a small enough size.(I believe smaller than 1/4 of the wavelength or something like that)

6:25 – Finally someone explained in detail how exactly a food microwave works. So the greatest peaks of the microwave’s amplitude is the one that creates hotspots? It would make sense since all peaks in a wave has the most energy. What would happen if the peak of the microwave is below the food? As if the peak of the wave is actually greatest at the surface of the microwave oven’s floor and not on the surface of the food? Maybe the microwave oven is designed such that the peaks of the wave will always remain at the level of the surface of the food…

Sir, it was really a wonderful explanation. One should know all the basics of Microwave oven technology before using it. Thank you.

How does an Antenna work? | ICT #4

(c) Lesics　Antennas are widely used in the field of telecommunications and we have already seen many applications for them in this video …

Can you be one of our patron? https://www.patreon.com/LearnEngineering . I will truly appreciate that.

Great explanation! This should be the intro of any radio wave class, straight forward to the goal!

You are great man. Being a Graphic’s designer i understand how much hard work you put in a 8 minutes video. Love for you 🙂

I like when you go straight to the point and do not make us waste time.

In 12 years of studying and practicing electrical engineering, this is the most succinct and clear explanation of antenna theory I’ve every heard! Great work!

in 8 minutes you show us what we took years to understand. more plz we are thirstymany thanks sir, from LIBYA

I’ve been struggling to understand how antennas work for ages. This one eventually explained it clearly to me in an easy to understand way. Huge thanks.

I have a question. In the animation where the antenna creates the signal, you can see that he signal spreads out as it propagates. During the animation where the antenna receives the signal, you just played the first animation in reverse, but wouldn’t the geometry of the incoming signal look completely different (it wouldn’t magically be drawn towards a point)?? Thanks!

thank you very much for the well detailled explanation ,i’ve been studying antennas for two years and i felt like this video got all what i was missing

This channel is doing a great job. For explaining concepts in engineering. Superbly impressed.😍

Wow! Unbelievable , you tried to cover almost every fact about EM Waves in this animation , very nice video

I wish professors taught us this way.. Good explanation.. Thanks a lot.. ❤️

Love ya Learn Engineering team❤️ wish yu many more centuries to keep posting these. We need it!!!!

Hey Sabin,Its great to see your videos.Your content easily understood than 6 months of lectures by engineering teachers.Please Upload more and more.Best Luck

This is insane. I knew technology in our world works mysteriously but this is really nuts.

Great video and clear explanation👍 Wish my professor could explain like this.

Best explaination ever. After 25 years I finally understood the oscillating dipole

Best and most simple antenna explanation I’ve seen in my life, good work.

Amazing explanation! I have wondered how these work a lot and never found a great explanation until now

As an electronics hobbyist this is the first time i’ve had antennas explained to me clearly. Great job!

Understanding Helicopter’s Engine | Turboshaft

(c) Lesics　A turboshaft engine acts as the powerhouse of modern helicopters. They are also used for power generation and marine …

Want to learn about turbine engines ? Check out AgentJayZ (https://www.youtube.com/channel/UCh57rwk3ySElDpzgCDLh9KA), he has also a video about compressor stalls.

2017: How a helicopter engine works2021: helicopter lore

It amazes me what we humans are capable of creating.

What a great set of animations! Top quality production here. Thank you!

From a non-expert perspective, the turbo shaft engine have so many movable parts that is easy to fail. However, i read in the report of a recent helicopter crash, that killed a famous brazilian journalist, the main cause was due to lack of maintenance of the compressor rotor for more than 30 years. Its impressive that such a complex engine worked more than 3 decades without maintenance.

Even though I already understood the contained information, the sweet visualization and the direct to the point accompanying explanation made this video a pleasure to watch. Big thumb up.

Once again I’ve got to say thanks for this amazing tutorial to understanding a turboshaft engine. I am currently studying aircraft maintenance and the content of this video is very handy to have a deeper knowledge of this sort of engine.I’m definitely sharing it with my classmates so they can benefit as well, also I will make the Spanish captions to help them understand it better.

Great video, fantastic graphics! I’d add one thing, the #1 way engine manufacturers prevent compressor stalls is by using a bleed valve (or T53 bleed band) type feature. Stalls most commonly occur during accel or decel unless you have damage like you mention. (30 year Helicopter mechanic, changed many bleed valves!

Amazing job! A big salute to people who made this all happen

Excellent work being done by Learn Engineering in the engineering education field.I hope that it gets more support.Very precise explanations and with ‘why’ behind the use of the components explained.This is how things should be explained.Thank you so much for every video you make.

Amazing engineering in a very clear demonstration ! Thank you !

Excellent information, straight to the point. I’m just an retired marine technician and understood this.

I appreciate your channel’s good intentions and the efforts you put in to make evey engineering dummy understand the intricacies. Thank you.

Wow such an incredible complex machineAmazing how gears can pass on such incredible power to the rotors.

I’m an A&P that retired from a company called Petroleum Helicopters Inc. in Lafayette, LA. This is a well made video for people interested in learning the basics of helicopters.

I’m a maintenance engineer and already knew everything that was said, but I stayed and watched the whole video because the production value is so high.

Ive been looking for a reasonable schematic of a turbo shaft engine for years, and I finally stumble upon this video. This is some amazing stuff, my mind is blown.

Very complicated yet inherently reliable I can see.

Never really thought about how this engine works, wow.

Learned engine mechanic for aircraft here in germany and this is one of the few explanatory videos about this topic in which I did not notice even the slightest fault. Not even a vocabulary mixup or inaccuracy. Really great to see this high quality videos on youtube again!

Torque Converter, How does it work ?

(c) Lesics　Most of us enjoy the smooth and effortless feeling of driving in an automatic transmission car. The driving is effortless because you …

I thank Prof. John Kelly and Dr. Kyle for their technical inputs to this video. If you like our work, please support us at https://www.patreon.com/LearnEngineering . Prof. John Kelly’s channel – https://goo.gl/7gpTzFDr. Kyle’s channel – https://goo.gl/txDKdK

The automatic transmission really is a stunning piece of mechanical art.

Without a doubt this was the best, and most clearly presented description of how a torque converter works that I have seen. I teach automotive engineering to young adults and it has always been a difficult task to explain how the Torque converter works. Your video is going to be of immense value. Thank you.

0:36 When you press the brake pedal, you disappear.

I am grateful for the geniuses that gave us this mechanical knowledge thoughout history.

The “pump” is also known as the impeller, and the “reactor” is also known as the Stator

A great video throughout. I especially appreciated the part about the lockup torque converter… when towing I always knew WHEN the torque converter locked up because the RPM would drop slightly without a gear change. Now I know WHY. Thank you!

I’ve had arguments with people on auto transmissions – they just can’t fathom a fluid based ‘pump’ being the core to power transmission in their car. I’m so glad I can just send this video now.Nice animation and explanation.

For years, all the explanations I could find skipped over the one-way clutch, but I couldn’t see how the converter could work without it; how could you have more torque out than in with no connection to be body of the transmission? Finally, about 15 years ago, I just Googled “torque converter” AND “one way clutch” to find a complete explanation. This animation makes it even easier to understand. Thanks for posting.

How instinctive and well described explanation on the public eye level it is. I can even go so far as to say that the quality of this video must be much more worth than any stuff used in school nowadays and I think we should study and share these well made videos for every child who is living with these technologies. I really hope you to continue this struggle and so appreciate that efforts. I’m gonna support this by any sponsor from now on.

How does anyone ever discover stuff like this? I’d never ever have the idea to use a high-density fluid and 3 rotors to create a component fulfilling this task.

Great video and explanation. It would be interesting to include the differences between a typical converter and a high performance, high stall converter.

1:15 incredible and fascinating how the torque converter can maintain handling and transferring so much power to the wheels. So incredible how gearing works so smoothly, and all combined can actually handle and displace all of it to the axle and wheels spinning with enough power.

I’ve tried to understand how these work for so long with no luck. I’ve watched so many videos that left me still confused. This is the best explanation of how a torque converter works I’ve ever seen! Awesome video

This was brilliant! Finally I understand how it works and what it does in the first place. Even the channel Engineering Explained, although being phenomenal at explaining everything, didn’t get me to understand the mechanics of a torque converter. You guy managed to do it in 8 minutes! Yup. You have a new subscriber. Thank you!

If there was a award for the best video explanation in youtube, you guys would win this easily. damn everything gets easier to understand with the help of you guys.

Great video. I couldn’t imagine how trippy this would be if we saw the fluid motion in action via a transparent casing!

This is literally insane to me. Humanity really has no limits when it comes to creating & improving things.

Thanks, Learn Engineer channel!Learned a lot. Although I have 2 questions. How is the spinning fluid strong enough to transfer the energy from the engine to the wheels in the Tourque Converter? How do cars achieve such high acceleration with this?

I love learning things like this. It was very informative however I would have to watch it more times to fully wrap my head around it but I got the gist of it. So many mechanical innovations are going on simultaneously inside the cars we drive.

How does an Induction Motor work ?

(c) Lesics　Be a Learn Engineering supporter or contributor : https://www.youtube.com/channel/UCqZQJ4600a9wIfMPbYc60OQ/join The …

I much prefer this narrator, sounds much more genuine. Huge improvement.

I can’t even begin to understand how Tesla managed to visualize this thing in his brain

I just had a chapter on induction motors for my HVAC class. This helped me cement my understanding of an induction motor. Thanks for the video!

22 years since i started as an apprentice winder and induction motor mechanic, this was nice to see, good job and very well explained. 👌

Man this is insane! You will make guys clear engineering courses in months like such tutorials! Awesome video! Keep it up!

I love this! I have been dealing with not responsible engineers in the past, this is the answers to some theory and I can create better machines than 3 of them of them together! Thank you! I knew part of it I want confirmation and I got it! Thanks for placing it together it makes my job easier no need to translate to my counterparts that speaks other similar language!

This one 6min video = one week of university lecturewell done!!!!

Great Video, Sir! Concerning ac induction machine for the electric vehicle market one question appears. Normal industrial machines rotate at a frequency of 50/60 Hz depending on the region they’re running in. But in electric vehicles is there a fixed output frequency or can you choose the freqency depending on the elctric vehicle?

I can’t believe how easy it is to understand induction motor and the speed controller. Thank you for a Great lesson.

Cara!!!Esses v�deos s�o sensacionais, imperdiveis.Congratulations.

A superb explanation with excellent graphics. You really cracked it here! I’ve worked with these machines for 20 years and always struggled to explain them to trainees. Thank you.

Thank you so much for this! Could you please do a video on the electromechanical induction meter and its working principles? I would appreciate it a lot.

No words to the video. It has cleared my many concepts related to induction motor. So perfect video. Thank you sir for your efforts. Please even make videos on other core electrical concepts…

This is pure genius in my believe. I mean, the slickness of the design and the creativity that must have gone into idealizing and crafting a motor that functions in this way is simply outstanding. Tesla was truely amazing

Amazing! It would be really great to see an animation explaining the operation of an Induction Generator.

Wow… The way you connected theory part with the practical part keeping it as simple as possible with a neat explanation is very good.

Hi, classic explanation and excellent animation. Thanks. What would happen if you Swapped out the squirrel cage for a capacitive inductor like a bifilar wound coil? (another NT invention/patent) Tesla called it shifting the phase of the magnetic field. With this in mind, you could really upgrade the explanation of how this works, taking it to the next level. More in line with how the inventor understood it to work. Don’t you agree? You might want to check out Thane C. Heins you tube channel for more information. Cheers, B

Thanks a lot Learning engineering team. your all videos helping me a lot to have strong concept about electrical engineering. Also thank you for a very nice 3d presentation. You guys deserves respect. Good luck

Really amazing!! I can understand the whole fact clearly. In this online education system these videos are really very helpful. Thanks a lot❤❤❤

Wow, Tesla invented such a simple and very awesome motor, that guy was truly a genius