June 29, 2010

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Crystal Optics Lens

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Crystal Optics Lens 3 Crystal Optics Lens
Ancient telescopes: Spiritual hogwash or scientific possibility?

No, i am not into magic crystals, i am not into free energy, i am not into astrology, i am not into pyramids, i am not into theosophy, i am not into UFOs...
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But, given the fact that glass-making was known to the egyptians and a great many items of optics were understood in ancient greece,
and apparently lenses were popularly used to light fire
(Aristophanes, playwright, The Clouds, 419 B.C.),
isn't it possible that some of the most highly developed ancient cultures who were obsessed with astronomy could have been in possession of "primitive" (single-lens refracting) telescopes?

There may have been many things in the past that are not now known of.
Galileo is given credit for being the first to use a telescope for astronomy but 30 years before him a father and son in England were using telescopes and another English scientist was making maps of the Moon using a telescope long before Galileo did so.
Galileo's notes were the first known to be published and that only, nothing else, is the reason for him being credited as the first and wrongly taught as such.
Likewise, Hans Lipershey is credited with the invention of the telescope but that again is simply because he was the first to patent the idea, not because he was the first ever to know of it.
Who that was may never be known but Thomas and Leonard Digges in England had at least one kind of telescope before the date recorded on that patent and maybe two.
http://www.chocky.demon.co.uk/oas/diggeshistory.html . . . .
Thomas Harriot predated Galileo in mapping the Moon with a telescope.
http://www.sciencedaily.com/releases/2009/01/090114110948.htm . . . . . .
The best answer on here is the one that people commponly believe. See mine for a closer truth.
http://answers.yahoo.com/question/index?qid=20100518183241AA6ld2D . . . .

The Romans had burning glasses and coloured glasses for decoration, glasses flat enough to use for filters before the eye to gaze through and see a red world or a green one or blue. Those glasses were not so rough as to produce a blurry and distorted view or they would not be used as viewing glasses.
Romans were not about bad workmanship or poor thinking, though they had their biased views as all peoples did in any age and still have. No-one in a normal life is entirely free of bias.
Phoenicians sailed the southern cape around South Africa and mapped the stars from there long before western sailors did it. The clay tablets left behind by those early sailors were then found to be not stories for entertainment nor fable and invented mystery but a record of reality.
http://uk.answers.yahoo.com/question/index?qid=20080206152348AAQS6tX . . . . .
Too often is some topic of 'common knowledge' repeated which is merely gossip and often the result of poor teaching or inadequate research.
Though a single lens cannot be used to produce an image of a distant object as do a combination of at least two lenses or a lens and a curved mirror in a telescope, it can be used for projection onto a darkened wall as can a simple pinhole or a larger hole.
It would not have un-noticed that at times in darkened rooms or caves an image of blurry or sharper outline and maybe with some detail was seen of some feature outside that was bathed in bright light sufficient for a crack or small hole in a rock or a tiny window to have made the image.
What then was done or experimented with can only be conjecture for the most part but the camera obscura was known without a lens and deliberately made as such very long ago.The beams of sunlight from small apertures designed to let the beams fall onto some tomb or coffin at certain times of the day or year would have made in some cases a round image of the Sun and not merely a square image of the aperture, if that aperture were small enough, as in a pinhole camera in which the smallness and regularity of the aperture compared to it's distance from the film are the only requirements for a image sharp enough to make a recognisable photograph of an object.
Until physical evidence is found or more certain literary evidence it can only be conjecture whether in some distant past there were objects and ideas not currently known to have definitely existed.
Until then my mind at least is open, as are those of many others.

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