Transcript of ESE 251 HARRY WONG Four Engineers and a Mathematician.
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- ESE 251 HARRY WONG Four Engineers and a Mathematician
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- Joseph Louis Lagrange Born in Italy during the mid-1700s
Inspired by a paper by Edmund Halley to enter mathematics while
studying at Turin College in Italy Later studied under Euler and
eventually succeeded him as director of Mathematics at the Prussian
Academy of Sciences. Moved to France in 1786 Survived the French
Revolution Reformed the systems of weights & measurements in
France to what is currently used today Made significant advances in
diverse fields of mathematics
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- Achievements of Lagrange Method of undetermined coefficients
Very useful technique developed by Lagrange A method for finding
solutions to inhomogenous differential equations Lagrange
Multipliers Used often in optimization problems In number theory
Proved every positive integer can be expressed as the sum of the
squares of four other integers
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- Death Died in 1813 and was Buried in the Pantheon
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- Leonardo Da Vinci Born in 1452 Florence To a notary and peasant
Phenomenal individual who accomplished many things as.
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- Paintings A painter 1505 Oil on poplar 1452 - Tempera
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- Anatomy An anatomist. Extremely detailed drawings of body parts
via dissection
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- Da Vinci the Engineer And most importantly as an engineer Made
technical drawings/designs for machines way ahead of their
times
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- The Helicopter It consisted of a flat platform with a screw
running through it Instead of rotor blades seen in modern
helicopters Had no real hope of actually taking flight Inspired
Sikorsky - father of helicopters to start building helicopters Made
first mass produced helicopter Sketch of Leonardos Ornithopter
Flying Machine
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- Sikorskys Helicopter Igor Sikorsky Vought-Sikorsky VS-300 First
mass produced helicopter Similar concept use of rotors instead of
screws to generate lift
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- The Parachute First modern conical parachute Linen cloths
supported by wooden poles
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- Testing of Leonardos Parachute In 2000, Adrian Nicholas used
the canvas/wood design set by Leonardo to make a parachute Test
jump from 10,000 feet was successful Proved that Leonardos design
worked!
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- Nikola Tesla A Serbian scientist born in Austria [1856] Trained
as an electrical engineer Immigrated to the US in 1884 Worked for
Thomas Edison for a while Completely redesigned its direct current
generators Later formed his own company and made numerous advances
in physics, computer science, and robotics Died in 1943 after a
long mental illness The unit for magnetic induction was named Tesla
in his honor
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- The Invention of The Radio Credit usually attributed to Marconi
Teslas patent upheld by SCOTUS after death Used a high voltage
resonance transformer [Tesla Coil] to propagate radio waves And a
rather bulky receiver consisting of a strong magnet, a long steel
wire, and various other components (like an antenna) Used
innovation to pilot a mechanical radio- controlled boat
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- Other Achievements of Nikola Tesla Developed AC current
(alternating current) Electric current can reverse direction
sinusoidally Proved superior to DC Transport electricity further at
higher voltages Used for domestic energy distribution Developed
induction motor AC motor Uses electromagnetic induction to get
power to motor Electromagnetic induction is the production of
voltage across a conductor situated in a changing magnetic field or
a conductor moving through a stationary magnetic field.
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- Charles Algernon Parsons Sir Charles Algernon Parsons was born
in 1854 Graduated college with a degree in mathematics Founded a
company called C.A. Parsons and Company to market his invention of
steam-turbines Company is now part of Siemens Died in 1931 in
Jamaica
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- Achievements of Parsons Primarily known for his invention of
steam turbines Uses pressurized steam to turn rotary blades
producing energy Showcased the capabilities of this technology in
the Turbina, the first turbine-powered ship Faster than any other
ship at that time Later used to power everything from locomotives
to airplanes Left: steam turbine Right: Turbina
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- Achievements of Parsons Today Today, 80 percent of world
electricity production is done via a steam turbine driving a
electric generator Above: Generator powered by 3 steam turbines
1000 MW
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- Alexander Graham Bell Born in 1847 in Scotland Had two other
brothers who died of Tuberculosis He immigrated to the US in the
1870 to establish a school for the deaf for the purpose of teaching
them how to speak using special method set up by his father One of
the students was Helen Keller Later abandoned the school to devote
his full energy to the telephone Died in 1922
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- The Telephone Derived from Bells work on the harmonic telegraph
MAIN QUESTION: Can we use electric currents to represent sound
waves? ANSWER: YES According to patent: the telephone was an
"apparatus for transmitting vocal or other sounds telegraphically
Sound was converted into waves that were then transmitted by wires
Alexander Bell speaking into a telephone prototype
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- The Metal Detector Developed the first metal detector Device
that detects metals by electromagnetic induction Used to detect
(unsuccessfully) the bullet lodged in President Garfields body
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- Hydrofoil Boat Bell with Casey Baldwin created first hydrofoil
boat prototype Based on the idea of hydroplanes As speed of boat
increases hydrofoils lift boat steadily out of water the hydrofoils
generate lift Allows the hydrofoil boat to reach amazing speeds
Created the Bell HD-4 that could reach speeds of 71 MPH
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- Questions