Have you ever wondered why the train wheel shape is conical, not straight. Let's explore this simple, but genius invention in detail. I hope you can support us today and save our educational service : https://www.patreon.com/Lesics Regards Sabin Mathew instagram : https://www.instagram.com/sabinsmathew/ Twitter : https://twitter.com/sabinsmathew Telegram : https://t.me/sabinmathew FB : https://www.facebook.com/SabinzMathew Voice over artist : https://www.fiverr.com/voiceonthemove