mark.curbishley@btinternet.com
20 Inch Smoothie Wheels - A wheel is actually a circular ingredient that is intended to rotate with an axle bearing. The wheel is reasons elements of the wheel and axle which has become the six simple machines. Wheels, together axles, allow heavy objects to get moved easily facilitating movement or transportation while supporting lots, or performing labor in machines. Wheels will be used for other purposes, for instance a ship's wheel, wheel, potter's wheel and flywheel.Common examples are simply in transport applications. A wheel greatly reduces friction by facilitating motion by rolling together by using axles. So that wheels to rotate, a minute must have to apply to the wheel about its axis, either as a result of gravity or by the effective use of another external force or torque.The English word wheel originates from the Old English word hweol, hweogol, from Proto-Germanic *hwehwlan, *hwegwlan, from Proto-Indo-European *kwekwlo-, a good way of the generator *kwel- "to revolve, move around ".Cognates within Indo-European include Icelandic hjól "wheel, tyre", Greek κύκλος kúklos, and Sanskrit chakra, warriors both meaning "circle" or "wheel ".Precursors of wheels, often known as "tournettes" or "slow wheels", were known in your Middle East by way of the 5th millennium BCE (one of the initial examples was discovered at Tepe Pardis, Iran, and dated to 5200–4700 BCE). We were holding produced with stone or clay and secured to the ground which has a peg around the center, but required effort to turn. True (freely-spinning) potter's wheels were apparently used in Mesopotamia by 3500 BCE and perhaps as soon as 4000 BCE, and also the oldest surviving example, that's within Ur (modern day Iraq), dates to approximately 3100 BCE.The primary proof wheeled vehicles appears around the second half on the 4th millennium BCE, near-simultaneously in Mesopotamia (Sumerian civilization), the Northern Caucasus (Maykop culture) and Central Europe (Cucuteni-Trypillian culture), and so the question that culture originally invented the wheeled vehicle 's still unsolved.The earliest well-dated depiction from the wheeled vehicle (here a wagon — four wheels, two axles) is relating to the Bronocice pot, a c. 3500 – 3350 BCE clay pot excavated in a Funnelbeaker culture settlement in southern Poland.The oldest securely dated real wheel-axle combination, that from Stare Gmajne near Ljubljana in Slovenia (Ljubljana Marshes Wooden Wheel) has become dated in 2σ-limits to 3340–3030 BCE, the axle to 3360–3045 BCE.Two types of early Neolithic European wheel and axle are known; a circumalpine form of wagon construction (the wheel and axle rotate together, like for example Ljubljana Marshes Wheel), and that in the Baden culture in Hungary (axle doesn't rotate). They are dated to c. 3200–3000 BCE.In China, the wheel was certainly present while using the adoption of the chariot in c. 1200 BCE,although Barbieri-Low[9] argues for earlier Chinese wheeled vehicles, c. 2000 BC.
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TITLE: | mark.curbishley@btinternet.com |
IMAGE URL: | http://i531.photobucket.com/albums/dd356/boston073/IMG_1472_zps0939ec94.jpg |
THUMBNAIL: | https://tse3.mm.bing.net/th?id=OIP.ztEyZmE8r1gGBlzn2HeJowEsDh&pid=Api&w=240&h=181 |
IMAGE SIZE: | 107766 B Bs |
IMAGE WIDTH: | 1024 |
IMAGE HEIGHT: | 768 |
DOCUMENT ID: | OIP.ztEyZmE8r1gGBlzn2HeJowEsDh |
MEDIA ID: | D6E867F157A8EC7A5D057059309BDCE5E5860F97 |
SOURCE DOMAIN: | rodsnsods.co.uk |
SOURCE URL: | http://www.rodsnsods.co.uk/forum/stuff-sale/20-inch-steel-wheels-71804 |
THUMBNAIL WIDTH: | 240 |
THUMBNAIL HEIGHT: | 181 |
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