RealWorld

 I wondered how the rolling wheels connected to the carbody that is parallel to the ground.  I could have guessed that cogs and bearings would be in between. But can they withstand that enormous weight? I was curious about the detailed structure. So I decided to find out. Drive shaft, Differential, Suspension, Wagon wheel ..  In the process of learning, I learned various interesting concepts. But I haven't found anything I'm really curious about.  However, while watching a video explaining how the engine works, the concept of how to change the rotation into a linear force emerged. I thought this is it. Then I got to know the bearing and found the real answer. Bearings are mechanical elements that reduce friction between moving objects. In short, several small balls play a role in transmitting one turn to the other. *Tribology : the science of wear, friction and lubrication, and encompasses how interacting surfaces and other tribo-elements behave in relative motion in natura

 Our sensory organ receive more and we,our counscionsness, perceive less.  Because most of the numerous sensory inputs are filtered out.  Sharks can smell a few kilometers and eagles can find mice a few kilometers away, but humans don't. But they all have structurally similar sensory systems.  Is it possible to hear and discern all the sounds from everywhere like Superman?  In conclusion, it's not impossible. Though sound is a wave transmitted through the vibration of a medium (particle) and it can be distracted by other forces, it seems our state-of-the-art technology makes the impossible possible.   The performance of a wiretap depends on how fine the sound can be tapped and how far the player can be. But security experts say, "Now, performance is rarely a problem for eavesdroppers," as recent ultra-high-performance eavesdroppers get on and off the media. Eavesdroppers hidden in fountain pen lids and rings, built-in taps built into power outlets, and eavesdrop

Recent discoveries in the context of the  Botai culture  suggest that Botai settlements in the  Akmola Province  of  Kazakhstan  are the location of the earliest domestication of the horse. I f we start with when we start to ride horses,  since 5000 years ago we've been start to ride animals. Land animals are possible to tame as the same mammals, but fish are not.  1. Most fishes cannot reach a certain level of learning. 2. People are susceptible to decompression illness for varying depths but fish and other water creatures are not.  Dolphins and seals, for example, avoid divers(decompression illness) by minimizing the influx of nitrogen by contracting one lung as they rise from the deep sea to the surface. as they use a lot of oxygen stored in their blood and muscles.  In other words, if we can tame dolphins ,for example, and handle the formation of vascular nitrogen bubbles in our blood vessels, we may be able to ride fish (sea creatures).  In fact, we can swim in somet