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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order

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Re: Pictures I made with my laser [Re: trendal]
    #4350839 -

:smile:

Thanks for the link. I contacted him about shipping to Holland.

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Re: Pictures I made with my laser [Re: trendal]
    #4350899 -

Quote:
trendal said:None yet, though I have some tentative plans to build a laser light-show machine for my bedroon :smirk:


If you do that you'll have more tail then you can hope to deal with

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Re: Pictures I made with my laser *DELETED* [Re: Noetical]
    #4351542 -

Post deleted by blinkidiot

Reason for deletion: Im sorry



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Re: Pictures I made with my laser [Re: blink]
    #4351564 -

:lol:


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4351598 -

Tren, that is seriously cool! I gotta get me one those things....

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Re: Pictures I made with my laser [Re: blink]
    #4351909 -

Here's a couple quick shots taken through a cubic zirconia I have laying around (shit I HOPE it's a zirconia...or I've been sitting on a large diamond for years!)




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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4351926 -

trendal said:
This last one is just a simple head-on shot of the beam itself. I like it because, for unknown reasons, it created a "halo" effect around the beam in the center (look closely and you can see a lot of concentric red circles in the image).



The light bending around the curvature of the lens?


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Re: Pictures I made with my laser [Re: HELLA_TIGHT]
    #4351928 -

(guessing)


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Re: Pictures I made with my laser [Re: HELLA_TIGHT]
    #4352182 -

I expect you are correct, and that the concentric circles are produced by interference in the light.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4353788 -

http://en.wikipedia.org/wiki/Lens_flare

How coherent is that laser? Does it diverge much on great distances?

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Re: Pictures I made with my laser [Re: Annom]
    #4354426 -

Coherence length for most HeNe lasers is around 10-30cm. The beam will diverge to about 1m diameter by 2km.

For the cost, I don't think this can be beat by any other laser type. I'm sure the only lasers you could find for less than $20 would be diode lasers which have rather horrid coherence length and beam profile (the beam is actually wedge-shaped and will diverge to 1m after only 1m without external optics!).


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4354437 -

:thumbup:
Now make yourself a borg costume.


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"All substances are poisons; there is none which is not a poison. The right dose differentiates a poison and a remedy." -Paracelsius

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Re: Pictures I made with my laser [Re: trendal]
    #4354438 -

Here's a couple more pics taken with the gemstone. ALl photos were taken of the image displayed on a white cardboard screen placed about 1 foot behind the gemstone.

With the beam aimed sideways through the base of the gem:


Same thing, but with the gem spinning rapidly:


Various images taken with the beam aimed through the top of the gem, exiting from the point on the bottom:


And here's the gem in question:


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: HELLA_TIGHT]
    #4354454 -

HELLA_TIGHT said:
trendal said:
This last one is just a simple head-on shot of the beam itself. I like it because, for unknown reasons, it created a "halo" effect around the beam in the center (look closely and you can see a lot of concentric red circles in the image).



The light bending around the curvature of the lens?


i would guess the laser is showing the grind marks from when the lense was made.


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No, no, you're not thinking, you're just being logical. ~ Niels Bohr

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Re: Pictures I made with my laser [Re: automan]
    #4354530 -

I had thought that myself, too. The laser point is certainly small enough to greatly magnify any fine lines in the lense.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4354533 -

Although I don't think it would produce the perfectly concentric rings that the picture has, unless the laser point was aimed at the EXACT center of the lense.

I by no means have that kind of accuracy in my aiming setup :smirk:


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4354636 -

It's a HeNe gas laser, rated at 1mW.

Eh, that aint nuthin. Check out the one-half petawatt laser I'm building in my basement: :whoa:

http://www.llnl.gov/nif/project/news_status.html


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Republican Values:

1) You can't get married to your spouse who is the same sex as you.
2) You can't have an abortion no matter how much you don't want a child.
3) You can't have a certain plant in your possession or you'll get locked up with a rapist and a murderer.

4) We need a smaller, less-intrusive government.

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Re: Pictures I made with my laser [Re: Diploid]
    #4354676 -

/me drools

Yeah I've been looking at that laser for a while now  :eek:

I think safety goggles would be in order, working with it :lol:


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Re: Pictures I made with my laser [Re: trendal]
    #4355866 -

point that thing at a stop sign! my friend use to point his little pocket laser at street signs and the whole sign would explode in red light..

a laser pointed at mylar is kind of cool too.


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Real botanists laugh at HPS systems, we do however use high pressure sodium in the parking lot. - artthug

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Re: Pictures I made with my laser [Re: felix]
    #4365900 -

Hehe yeah that was one of the first things I tried, as soon as it got dark outside :smirk:

This one lights up the whole stop sigh pretty bright. I'll try and take a pic tonight.


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Once, men turned their thinking over to machines in the hope that this would set them free.
But that only permitted other men with machines to enslave them.

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Unfolding Nature Shop: Unfolding Nature: Being in the Implicate Order

Community > The Pub
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