h a l f b a k e r yOh yeah? Well, eureka too.
add, search, annotate, link, view, overview, recent, by name, random
news, help, about, links, report a problem
browse anonymously,
or get an account
and write.
register,
|
|
|
Lens gnomon
Sundial with a marble atop the gnomon makes a little light circle at the time-point. Sort of. | |
Sundials have gnomons, usually a triangular thing in the
middle. At first thought making a gnomon out of lens
glass,
perhaps with something like a marble at the top would
make
a bright spot appear on the edge markings.
It might be a little more complicated than that though,
as the
day
progresses the focal distance of the double-convex
lens,
or marble, changes.
I think with optical modelling software, A Gradient
Refractive Index (GRIN) lens, or a few marbles,
something could be done.
Sundials
https://en.wikipedi...al#Unusual_sundials
Some similar to what you describe, using light instead of shadow. [neutrinos_shadow, May 28 2018]
https://www.etsy.co...&utm_content=140550
[2 fries shy of a happy meal, May 30 2018]
Luneburg lens
https://en.wikipedi.../wiki/Luneburg_lens
What I think is being proposed to use [notexactly, Jun 02 2018]
[link]
|
| |
Does this mean there could be a single column of glass with various internal densities that if orientated correctly, will act as a sundial? |
|
| |
Since the focal length is fixed, you want to use an equantorial sundial. There are other weird types; see the Wikipedia page (linky). |
|
| |
Looking superficially at [neutrinos_shados]'s link. I got had the thought of X-ray crystallography. Could a 3D atomic arrangement of a clear marked curved vase be so arranged to act as a light concentrator displaying the hour. Because location is paramount, the vase would be individually made to locations. |
|
| |
The future extrapolation of the sun vase would have induction power and alter atomic structure, via powerful magic smoke, to suit season and location. Of course it would be a desktop toy as GPS would be at the micro-m scale with corresponding time. |
|
| |
Ever wander into a conversation not being entirely
sure you speak the same language? |
|
| |
[RayfordSteele]; even when I'm talking to myself... |
|
| |
It all comes down to what is in the 'space', a solid, loops, strings or the dimensional magic trick of nothing. |
|
| |
Here's the most unusual one I've seen. [link] |
|
| |
Thanks [2 fries shy of a happy meal], An internal gnomon using atomic spaces might be possible. |
|
| |
I did imagine a column that, because of the high energy particles and wave energies from Sol, would display a ring of phosphorescence. The cylinder surface light ring emitted would be 90 degrees to Sol's current position. I was imagining cross talk between the energy rain particles and waves that would react inside the cylinder and bleed horizontally, initiating phosphorescence. |
|
| |
Then again, a column of LEDs, with a clock chip, could compute and light the exact same thing. This method, sadly, is just not a physical cascade reality. |
|
| |