Robert Hooke Robert Hooke is mainly known for Hookes Law. Extraordinary person,inventor, microscopist, physicist, architect surveyor, astronomer, biologist, artist.. With Christopher Wren, he organised the rebuilding of London after the great Fire Hooke was a disfigured, frail, (possibly) difficult man who was robbed of the credit for his greatest inspirations and ideas. His portraits and many of his creations wilfully destroyed or lost after his death in 1703. ( By Newton?) Modern historians are restoring his reputation and call him “The English Michaelangelo”

Hooke in Context 1 Robert Hooke was born in 1635 on the Isle of Wight. Youngest of two boys and two girls. Father John Hooke was a C of E vicar and taught Robert at home and in the local school. Young Robert fascinated by observation, mechanical works, and technical drawing. He built a working wooden clock. On his father's death in 1648, Robert went to London to buy an apprenticeship. Soon went to Westminster School and specialised in Mechanics

Hooke in Context 2 In 1653, Hooke secured place at Oxford University as a "chemical assistant" 1655 to 1661 he worked for Robert Boyle (Boyles Law) constructing, and operating Boyle's air pump. ( Hooke may have developed Boyles Law ) In 1661, Hooke appointed as Curator to the Royal Society (Experiments) Awarded Master of Arts in 1663. In 1664, Hooke appointed Professor of Geometry at Gresham College In 1691 he received the Degree of "Doctor of Physic"

Main Discovery ? Hooke was an excellent mathematician and developed the equation F =k(Δx), known as Hookes Law, where F is the force in newtons, N k is the 'spring constant' in newtons per metre, N/m Δx is the extension in metres, m

Hooke’s Law Hooke was an excellent mathematician and developed the equation F =k(Δx), known as Hookes Law, where F is the force in newtons, N k is the 'spring constant' in newtons per metre, N/m Δx is the extension in metres, m

Use and progression of Hooke’s Law Hookes Law is a basis of Strain ε ε=(Δx/x) =(extension(m)/original length(m)) for a material and then : Youngs Modulus E = Stress = σ . Strain ε σ = Stress = Force (Pascals) . Area it is usually essential to know Youngs Modulus for any materials used in manufacturing and construction.

Finally… Any Questions ?