Past and Present

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Past and Present

• How are simple machines useful?

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Review of Simple Machines

• http//www.mikids.com/Smachines.htm

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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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Can you guess now?Are there any of the same
simple machine from the last picture?
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• Jefferson's Pasta Machine
• Thomas Jefferson noted these plans for a macaroni
  or pasta machine while touring northern Italy in
  1787. When Jefferson prepared these plans,
  macaroni was a highly fashionable food in Paris,
  where he was stationed as minister to France. He
  later commissioned his secretary William Short to
  purchase a macaroni machine in Italy, but the
  machine was not very durable. In later years
  Jefferson served macaroni or spaghetti made by
  cutting rolled dough into strips, which were then
  rolled by hand into noodles.

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Can you guess what this is?

• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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• Dayton C. Miller, in cycling attire, stands
  before his bicycle ca. 1883
• How old is this picture?

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Do they use the same simple machines?

• What simple machine do you find on a bike today
  that wouldnt have been on a bike in 1883?

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Simple Machines on todays bike
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• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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• Old-time battery radio (1915-1925 photograph by
  Harry M. Rhoads) History of the American West,
  1860-1920

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Todays version
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Can you guess who drew this?

• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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Now can you guess?
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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

• http//memory.loc.gov/cgi-bin/query/r?ammem/berl_at_
  field(NUMBER_at_band(berl130559))

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• Early gramophone, hand cranked (1894 photograph)
  Emile Berliner and the Birth of the Recording
  Industry

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Which would you rather have?How it this
different from the earlier one?
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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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• Carpet cleaner run by a gasoline engine (1907
  photograph) Prairie Settlement

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Simple Machines

• Gearyellow
• Wheel and axlered
• Pulley--green

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Do you know what this does?

• What simple machinesdoes this have?

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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention? Are there any?

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• Child standing on snow gauge of the Weather
  Bureau (ca. 1909 - ca. 1932 photograph)

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• How does this seem the same as the last
• picture? Does anythingin the picture give
  youa clue to what it might
• be?

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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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• The Airphibian (1947 photograph)
• What do you think an Airphibian would be?

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(No Transcript)
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• What do you think this machine did? Why do you
  think that?
• When do you think this machine was made? Why do
  you think that?
• Would a machine like this exist today? What do
  you think it might look like?
• What types of simple machine were used to make
  this invention?

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• The Holland Submarine (1936 photograph)
• This would be
• a submarine today.

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• How and where are simple machines used in your
  every day life? That will be tomorrows topic so
  look around tonight and see what you can find.