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Math Forum » Discussions » Math Topics » geometry.pre-college.independent

Topic: Hyperbolas in Nature
Replies: 29   Last Post: Mar 24, 2010 6:05 AM

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Brian Hutchings

Posts: 78
Registered: 12/6/04
Re: Hyperbolas in nature
Posted: May 16, 1996 5:54 AM
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OK, I *think* that I see. mr.Fan was wanting to paint a canvas
which'd display what the hoop looks like; assuming that
said hoop is centered horizontally around one's body (as axis),
lowered from eye-level (or below horizon [Gr., circle-zone]), an
that the canvas is standing vertically beyond it,
one simply closes one eye & projects a cone through the hoop,
intersecting the canvas in one limb of a hyperbola, as
with the lampshade-shadow-on-the-wall construction --
the canvas is an infinite plane, of course!... the other limb
is projected onto the canvas above the horizon, through your eye,
with sufficient wattage (heh-heh).... but, in this case, you might
have another limb on another canvas, behind you, for whole hoop.



"Time is the only dimension." -RBFuller

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