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The History and Importance of Binoculars
Transcript of The History and Importance of Binoculars
Physical: allows you to see far distances and makes jobs easier so people can perform their job properly and efficiently
Modern Societal Uses of the Binocular:
Requirements for Efficient Binoculars:
The lenses used in binoculars are convex lenses, usually 2 or more. If there are more lenses, the magnification will be more intense
How Do Binoculars Function?
Why Was it Invented?
We suspect Galileo wasn't intentionally designing a telescope with 2 spy glasses, it was simply more efficient than only 1. His intention was to improve the distance of how far you can see from the telescope. His design with 2 spy glasses worked much better, thus inventing the binoculars.
Who Invented the Binoculars?
According to many resources; there are several inventors who claim to have invented the binoculars, but following the first documented patent;
invented the first binocular telescope.
Antonius de Rheita
The first hand held binoculars were invented by Johann Zahn, using 2 tubes a lithe connection.
This Dutch scientist was believed to create the first telescope, which was essential in order for Galileo to develop binoculars.
The Italian scientist Galileo heard of Hans Lippershay's invention of the telescope, deciding upon himself to further improve it. His improvement allowed the viewer to see 30x as far than before, the first astronomical binocular telescope. The changes that consisted were putting 2 spy glasses together, and using Galilean optics (also his invention). He named it the Galilean binoculars.
Modern version of an Astronomical Binocular Telescope
Galileo's Astronomical Binocular Telescope
Coin Operated Binoculars: for public's use to view scenic areas
Bird Watching: bird watching enthusiasts and hikers can see the birds and wild life much more visibly with efficiency
Hunting: hunters can very effectively kill animals with a crystal clear view of their target either close range or further away with either a scope adjusted to their rifle or having a spotter with binoculars in hand
Sports: while sports fanatics are far up in the Grand Stand and can't see the game as close
Modern Scientific Uses:
Military/Navy: binoculars can be used to see the enemy coming towards the ship or camp
Astronomy: astronomical binocular telescopes can be used to observe stars and planets to learn more about space
Social: binoculars can be used for leisure activities or organizations that involve outdoor activity
Binoculars are very effective at doing what it is meant to do because because there are now many different uses for binoculars involving scientific research, leisure and outdoor activities, and efficiently sufficing certain job requirements
the eyepiece performs the function of bringing the image into focus and makes it visible for our eyes to see it
this is located between the lenses and the eyepieces. It has 2 tasks; bends the light rays that enter the binoculars, then magnifies the image and flips the image. Without the prism, the image would appear upside down
When binoculars are pointed at a distant object, the light rays from the object fall on the objective lens
the objective lens picks up the light rays; makes a focused image
this image is picked up by the smaller lens and is then magnified
the magnified image is then sent to the prism
it flips the image and sends it to the eyepiece to make a 3D image, so we can view the image
NOTE: Some binoculars have a 'center focus wheel' where it allows you to adjust the magnification to be sharper
Types of Binoculars:
Porro Prism Binoculars:
(Invented by Ignazio Porro, 1854) Roof prisms have straight tubes (the objective lens is in line with the ocular lens) which makes them more compact. Provide a wider field of range, the offset lenses give a greater depth perception which allows more light capacity for a brighter image
Roof Prism Binoculars:
(Invented by Achille Victor Emile Daubresse, 1880) Porro prims have a single pivot between the two halves of the binoculars, which makes it easier to adjust the distance between the eyes. Gives a smaller field of view and less depth perception.
The History and Importance of Binoculars
By: Simone D'Hondt and Hannah Anderson