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= ﻿ = = __ History of Bikes __= === ** History of Bikes; bikes were invented by Baron Karl vonn Drais. It was released to the public in Manneheim, Germany in the year 1817. It was first made with wood, since that was the only thing they had, and the seat was a basic wooden plate. Pushed by their feet, they steered with the front wheel. The in 1860 a French man named Pierre Michaux and Pierre Lallement introduced the pedals to the bike. In 1888 Scottish man named John Boyd Dunlop he invented the first tire made from rubber, which was used on the bicycle. In 1905 the bicycles had the first hand brake, and chains that were attached to the bike. ** The first bicycle was called the Dreisine. In the 1870 the High-wheel bicycle got invented. It had a huge front wheel and a small back wheel. The pedals were attached to the front wheel, and there was no chain. The front wheel was so big, because the seat would then be above the pedals that were attached to the middle of the front wheel. And if the wheel would be bigger, the bike could move faster with one push of your foot then it would with a small wheel. Bikes were first invented because it was faster than walking. Also, it was easier that using a horse because although horses were faster, horses need food, water, exercise and lots of land to roam so they are much harder to take care of than a bike.=== = __ Phase 1 __= = = ﻿The disadvantages of Iron are that it rusts if it isn't protected by paint or other sealant. It is brittle, unless it is combined with carbon. The advantages are that Iron is more stable then wood, and wood you could burn down, while you would need more heat then only fire to melt Iron. === === === No one really discovered iron it has been around for many years. However, 4000 years ago the Sumerians and the Ancient Egyptians first used iron in spears and jewelry. The time it was discovered however was way before the time of "christ". Since iron is in our Earth's core and on the crust of our Earth it is slightly impossible to say that there was a specific man or woman who discovered iron. The first time iron was mass manufactured was during the Industrial Revolution. A man named James Watt invented a machine that would convert Iron into steel in the year 1763 AD. === === Iron is found as sometimes rust, or as the chemical compound Iron Oxide. It is naturally found in the core of the Earth. The Ancients may have found it on the surface of Earth and in some rock deposits. ===
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Irons impact on the environment is mostly caused by mining.
=== mining can cause erosion, formation of sinkholes, loss of biodiversity, contamination of soil, ground water and surface water by chemicals from mining processes ===

The impact of iron on society is a major one.
=== In the Iron Age people made weapons, tools and jewelry out of iron also in the industrial revolution iron was used on the machines and the products that changed the world. in the twentieth century irons has been used to make skyscrapers cars and bikes. Iron was very revolutionary because it has been around for many centuries and the cause of iron made so many different innovations occur. Such as the invention of the car, plane, and many more used iron in vital parts in the innovations. Also, during the industrial revolution iron played a big part from being welded to being mass manufactured. Iron was later on transferred into steel. === === Pictures of the first bicycle show a wood plank body, with iron wagon type wheels, no tires to speak of, and iron steering. these were push and coast bikes with no other drive system. ===

**wood : wood does not have a chemical formula**
= = = iron: Fe= = =

=  __**Phase 2**__   =

=== ** Some of the current materials used today on bikes are Aluminum and Carbon Fiber. Also, the tires are made of rubber and the bicycle spokes are made of steel. Some parts of the bike however, are made from plastic. A lot of these materials were chosen because of it was either cheaper or it would make the bike lighter and faster for people to travel on. ** ===

** Why bikes evolved from iron to aluminum **
=== ** Some of the driving forces that caused bikes to evolve from iron to aluminum was that iron was not as strong as aluminum, it was also heavier and more susceptible to rust than aluminum. Aluminum also was shinier which appealed to more people. ** ===

=== At the beginning of the bike's history, when Iron was used as the main material of the bike, people didn't have pedals or chains. They had to stick their feet between the spokes and push down so they could move. Pushing the spokes with your feet hurts, whilst pedaling only costs some energy. The chains are helpful, because you won't have to stretch to the front of the wheel. So when in 1905 the chains were invented, the bike became much easier to ride. ===

=== The structure was very heavy but now we have such light equipment. There are many kinds of bikes like stunt bike, sand bikes, mountain bike, etc. But the light equipment is used usually in mountain bike and stunt bikes. ===

=== ﻿As every other element aluminum was never "invented". However, aluminum was discovered/founded by a man named Davy Humphrey and named it aluminum in the year 1808. ===

=== Aluminum's advantages are that it's much lighter than iron. Also, aluminum is stronger than iron and it doesn't rust. Aluminum also has some waterproof qualities in it. However, some disadvantages of Aluminum is that it's very hard to weld, whilst other steels are much easier to weld such as iron. Although aluminum has waterproof qualities, but it can still be stained by water which ruins the design of aluminum. Those are some of the advantages and disadvantages of Aluminum. ===

=== Pure Aluminum is very soft for a metal but also durable, malleable, conductive and shiny but when you and iron into the compound it becomes stronger and is much more useful. ===

**Iron was bad for the environment, because it messed up the environment when mined. It was harder to obtain then Aluminum is. Aluminum doesn't mess up the environment when obtained, but it isn't good for the environment if you burn the Aluminum.**
 * Aluminum is much better then iron, because it is lighter and has a lower melting point which helps in the construction. **
 * Being lighter can make faster and easier to stable. **

Steel: Fe3C
= = = Aluminum: Al= =    = = Titanium: Ti= =    = = plastic: (CH2CHCl)n= =    = = Magnesium: Mg= =    = = Scandium: Sc= =    =

= Before After =

= = = = = = = = = = = = = = = = = = = = = = =   **__ Bibliography __**=

= ﻿ = = [| http://www.corrosionist.com/Who_Discovered_Iron.htm]= = [| http://wiki.answers.com/Q/Where_can_iron_be_found_naturally]= = [| http://en.wikipedia.org/wiki/Bicycle_frame]= = [| http://answers.yahoo.com/question/index?qid=20070223215940AAl4cqY]= = [| http://science.jrank.org/pages/3572/Industrial-Revolution-Iron-steel-manufacture.html]= = ﻿ [| http://en.wikipedia.org/wiki/Bicycle] = = [| http://www.blurtit.com/q418033.html] = = [| http://www.gharexpert.com/articles/Aluminium-Doors-192/What-advantages-disadvantages-Alumi_0.aspx]= ||  || Contributions to http://bikesproductdesign.wikispaces.com are licensed under a [|Creative Commons Attribution Share-Alike 3.0 License]. ||
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