GB: 473nm diode information / giveaway

[IsaacT]

I predict one of these people will win:

21-24: ApexProxy - 20
25-32: Smeerworst - 40
33-38: KapHn8d - 30
39-43: ZRaffleticket - 25
44-51: bloompyle - 40

Simply due to number superstition. lol.

 

[ZRaffleticket]

I do believe my heart rate doubled and my blood pressure went up. Get this done dave!

 

[bloompyle]

Numbers look good, waiting excitedly!

 

[Speedy78]

When is this happening?

 

[Atomicrox]

Sounds good.

 

[ARG]

When is this happening?

Just sent Dave the PM, since people approved the list.

Whenever he gets around to it, then we'll know the winner

 

[Speedy78]

Possibly tonight then. Oh no I'm nervous

 

[ZRaffleticket]

*impatiently waits*

GAH I hope its me.

 

[bloompyle]

Dave seems troll enough to wait until 4am to post it

 

[Wolfman29]

He would. Which means we'll all die from exhaustion by then.

 

[ZRaffleticket]

....he would.

 

[bloompyle]

In other news, via combined math efforts between Dr. Sam and I, we have narrowed the wavelength of our myster line to around 608.8741nm. Not considering the angle at which the image was shot, and the angled spread of the spectrum coming out of the grating.

I got the following by measuring pixels in photoshop (I then took my final average and averaged it with Sam's number)

594.1 -> 604.6
738.54

604.6 -> 609
316.35

609 -> 611.9
205.69

TOTAL
17.8nm
1260.58

594.1 -> 604.6:
---------------
738.54/1260.58 = 0.5859
"" * 17.8 = 10.4285
"" + 594.1 = 604.5285



604.6 -> 609:
-------------
316.35/1260.58 = 0.2510
"" * 17.8 = 4.4670
"" + 604.6 = 609.0670



594.1 -> 609:
-------------
(738.54+316.35)/1260.58 = 0.8368
"" * 17.8 = 14.8956
"" + 594.1 = 608.9956



611.9 -> 609:
-----------
205.69/1260.58 = 0.1632
"" * 17.8 = 2.9044
611.9 - "" = 608.9956



AVG : 608.8741nm

 

[Wolfman29]

Erm. I wouldn't use that many sig figs, considering the accuracy of the pictures XD Just be content to call it 609nm +- .5nm. Heh.

 

[bloompyle]

We are currently calling it ~609nm, no .6 after. However, it (mostly) eliminates the 609.6nm line. Either way, it gives us drive to focus on other possibilities.

It is equally possible that this is another RAMAN line. It's orbital path (is that even a thing) follows similar patterns to other known RAMAN lines.

 

[Atomicrox]

I don't think that's how grating distances work, they're not linear with wavelength..

Try measuring the distance from the grating to the wall and the distance from the undiffracted dot to the 1st order dot. Then you can use
lambda = k*1000000000*sin(atan(d/D))
where
lambda: wavelength (nm)
d: distance between dots (m)
D: distance from the grating to the wall (m)
k: distance between grating lines (m) => this can be computed from a known line if you don't know the value

 

[bloompyle]

The space between the spots is linear. They aren't just going to be tossed about randomly.