Stupid L4 trick

[Frangible]

Hold the L4 up to the back of your fingers. It generates enough light such that you will be able to see the individual blood vessels in them. Kinda cool.

 

[Sean]

Yep, I already showed my daughter that one. /ubbthreads/images/graemlins/thumbsup.gif

Figured that out when I was young, but as you have noticed it works much better with an L4 than a old dim $1 single AA incan.

 

[MR Bulk]

Works pretty good with an M6, too! 'Cept I guess the color of the blood is more -- yellow?

Thanks for a refreshing break from the same old technical flashlight discussions! /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif

 

[The_LED_Museum]

I was looking for my KL4 to try this with, and found my "rotten cat urine green" Reactor, and it works with that too - just not as bright. /ubbthreads/images/graemlins/smile.gif
Now, if you'll excuse me, I'd better go flush this Reactor down the can... /ubbthreads/images/graemlins/wink.gif

 

[Xrunner]

[ QUOTE ]
The LED Museum said:
Now, if you'll excuse me, I'd better go flush this Reactor down the can... /ubbthreads/images/graemlins/wink.gif

[/ QUOTE ]

Cool trick. I have the same problem every time I take out either of my reactors. I have this sudden urge to do some strange things to them. Who knows what's going to happen one of these times? Experimental surgery? /ubbthreads/images/graemlins/icon3.gif /ubbthreads/images/graemlins/grin.gif

-Mike

 

[The_LED_Museum]

[ QUOTE ]
Xrunner said:
Cool trick. I have the same problem every time I take out either of my reactors. I have this sudden urge to do some strange things to them. Who knows what's going to happen one of these times? Experimental surgery? /ubbthreads/images/graemlins/icon3.gif /ubbthreads/images/graemlins/grin.gif

-Mike

[/ QUOTE ]
Turns out, the Reactor is too big to flush. A little wash in the sink... good as new!!! /ubbthreads/images/graemlins/smile.gif Still green though. /ubbthreads/images/graemlins/icon15.gif
My two other Reactors have pure, snow white beams...I don't feel like flushing them. /ubbthreads/images/graemlins/wink.gif

 

[flownosaj]

Trans Illumination--gotta love it /ubbthreads/images/graemlins/smile.gif

-Jason

 

[Kiessling]

try it with red LEDs ... even more impressing! red light travels better through human tissue, so you get much better results with an INova X5Red than with your KL4 ...
/ubbthreads/images/graemlins/grin.gif
bernhard

 

[Ginseng]

Here's another cool L4 trick!

Click it on and hold the head in your palm so that it's shining through your fingers. Clamp your fingers closed so no light beams come out. Now slowly crack you fingers so a little light leaks out from the tiniest gaps between your fingers. What do you see? If you do it right and make only the tiniest openings, you can actually generate single, double even smeared images of the die! Eerie. I can only guess the holes are acting as pinhole cameras and imaging the die.

Wilkey

 

[Zeppert]

I tried this one last night...

First I turned off all the house lights in my den. Then I reached out carefully using my right hand and grasp my E2 firmly, as I lifted it from my desk top I utilized optimum dexterity to twist the light on as I raised it to the right side of my head. With precise manipulation I strategically inserted it firmly into my ear opening and then paused briefly. To my amazement light began to shoot out from my left ear and project onto the wall to my left side. What? this can't be, I exclamed! Using my left hand I grabbed the lightmeter, raised it to my left ear to see if I could get a reading. And low and behold,.. there it was in digital numberic fashion... 967 LUX! Well, I just stood there in total amazement being awestruck and shocked!
Try this one out. /ubbthreads/images/graemlins/tongue.gif

 

[pjandyho]

[ QUOTE ]
Zeppert said:
I tried this one last night...

First I turned off all the house lights in my den. Then I reached out carefully using my right hand and grasp my E2 firmly, as I lifted it from my desk top I utilized optimum dexterity to twist the light on as I raised it to the right side of my head. With precise manipulation I strategically inserted it firmly into my ear opening and then paused briefly. To my amazement light began to shoot out from my left ear and project onto the wall to my left side. What? this can't be, I exclamed! Using my left hand I grabbed the lightmeter, raised it to my left ear to see if I could get a reading. And low and behold,.. there it was in digital numberic fashion... 967 LUX! Well, I just stood there in total amazement being awestruck and shocked!
Try this one out. /ubbthreads/images/graemlins/tongue.gif

[/ QUOTE ]

You saying you have fibre optics connecting from your right ear to your left? /ubbthreads/images/graemlins/bowdown.gif /ubbthreads/images/graemlins/bowdown.gif /ubbthreads/images/graemlins/bowdown.gif /ubbthreads/images/graemlins/jpshakehead.gif /ubbthreads/images/graemlins/jpshakehead.gif /ubbthreads/images/graemlins/jpshakehead.gif

 

[stephenanderson2]

no fiber optics, just empty space /ubbthreads/images/graemlins/yellowlaugh.gif

 

[DiamondCut2_0]

Stick the L4 in your mouth and puff out your cheeks. /ubbthreads/images/graemlins/hahaha.gif /ubbthreads/images/graemlins/icon15.gif

 

[NightStorm]

Back to the original topic, I've used the finger illumination trick for years (with various incans) to see if I had fractured a finger tip (instead of merely mangling it). Solid bone shadow = no fracture. Light coming through the bone shadow = /ubbthreads/images/graemlins/icon15.gif . Fortunately, I haven't had to do that in a while. /ubbthreads/images/graemlins/smile.gif

Dan

 

[JanCPF]

Here is another one. Now don't use your L4 for this. Instead reach into your pocket and pull out your Arc AAA. Close your eyes and shine the light sideways into the outer corner of your eye through the eyelid. If you do this at the right angle you will be able to see a projection of the blood vessels in your retina. No kidding - try it! /ubbthreads/images/graemlins/grinser2.gif

Jan

 

[The_LED_Museum]

I tried this, and all I see is a red color. Must be doing it incorrectly. /ubbthreads/images/graemlins/icon15.gif

 

[JanCPF]

Hmm - try to move the light a little on top of you eyelid. Remember - the light has to come in at an angle (near the corner of your eye) not directly from the front. Also try to change focus (if you can). Suddenly it's there - in my case anyway.

 

[DumboRAT]

You can also trans-illuminate the paranasal sinuses, scrotum, and the skull of infants.

/ubbthreads/images/graemlins/smile.gif

For the first, it's helpful in diagnosing sinusitis suggested by tenderness upon palpation (when the doctor mashes down on these sinuses during your exam). The room has to be thoroughly darkened, and usually, a very narrow-beam light-source (fiber-optic "stick" or, in certain instances, a "device" made from the cut-off fingertip of a medical exam glove) is used to allow for precise location. Usually, an absence of transmitted "red glow" through the sinuses suggests that there might be thickened mucosa or secretions (for the frontal sinus, right above each eyebrow, this test exam technique is complicated by the fact that there can be a developmental absence of one or both of these sinuses in certain individuals).

Swelling in the scrotum other than the testicles can be examined by transillumination. Room is darkened, and the beam is directed from behind the scrotum towards the front. The medical professional than looks for light transmission as the usual red glow. Usually, transillumination reveals a red glow if the swelling is (serous) fluid in nature -- with blood and tissue swellings, such as a tumor or a hernia, not transilluminating. The normal testis, of course, is solid, and will not transilluminate.

Transillumination is also often employed to help diagnose infants suspected of certain central nervous system diseases, such as hydrocephalus.

/ubbthreads/images/graemlins/smile.gif

Allen
aka DumboRAT

 

[EvilLithiumMan]

Forget the fingers. Go into the bathroom. Stand in front of the mirror. Stick the L4 or similar lumen generating monster into your mouth. Turn off the lights and allow your eyes to become dark adapted. Now turn on the light.

No - I haven't stuck my C3 anywhere else. That will be left as an exercise for the student.

 

[raggie33]

i put a spider in my mouth and the light shines out my left ear /ubbthreads/images/graemlins/icon3.gif