keanjalan XD Elasticity

kay guys ri ni aq nk cte psl kanjalan untuk sesuatu material huhu  XD ....

Elasticity - the ability of a solid to recover its shape when the deforming forces are removed. The deformation of an elastic material obeys Hooke's law, which states that deformation is proportional to the applied stress up to a certain point. This point is called the elastic limit. Beyond this point additional stresses will cause permanent deformation. All materials have some degree of elasticity, but rubber, for example, is 'more elastic' then metal or wood. The elasticity is a consequence of forces acting between atoms and molecules in any material. These forces keep individual atoms at constant distance in positions at which the potential energy of atoms (or molecules) is minimal. They are called equilibrium positions. If we apply an external force to a given material, we have moved atoms from their equilibrium positions. After removing the force, atoms in elastic materials return to their original positions

lau x silap aku.. masa process buat getah if we campurkan carbon black kat getah tu, getah tu akan jd kurang kenyal n bertambah tough. tu yg getah warna itam suma mmg tough XD. tp in the end everything has its limit XD. x suma material tu bole kekalkan bentuk asalnye.. sampai satu masa nnti mats tu akan berubah jugak dari segi bentuk size or density huhu munkin something else dia jd tp mestilah pertukaran yg sama nilainya keh3 (dah mcm fullmetal alchemist )

getah yg bermacam kaler

masa kat skolah dulu , aku guna getah ni maen tembak pluru kertas hehe. tp ble dah besar skit .. campur kayu dah jd pistol getah XD. 

rubber ball

aku x pernah wat benda ni hehe.. ada skali tgk org tu gumpal jd besar gila OoO very interesting 

HD picture of rubber band