« previous next »
Pages: 1 [2] 3   Go Down

Author Topic: Glow in the Calc  (Read 13652 times)

0 Members and 1 Guest are viewing this topic.

Offline mapar007

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 550
  • Rating: +28/-5
  • The Great Mata Mata
    • View Profile
Re: Glow in the Calc
« Reply #15 on: November 29, 2009, 07:01:48 am »
Heh, I was thinking of that radium calc too xD (but it's too long ago for me to have experienced)
Logged

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Glow in the Calc
« Reply #16 on: November 29, 2009, 04:59:09 pm »
I think I actually saw this around 2002, when checking some old ticalc news, at first I was like lol wtf? XD

Also welcome back Mapar007, noticed you haven't been around in a while
Logged

Offline mapar007

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 550
  • Rating: +28/-5
  • The Great Mata Mata
    • View Profile
Re: Glow in the Calc
« Reply #17 on: December 02, 2009, 12:43:30 am »
Indeed, exams going... I still won't be very active in the coming two weeks.
Logged

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Glow in the Calc
« Reply #18 on: December 02, 2009, 01:49:03 am »
I wish you good luck in them
Logged

Offline JoeyBelgier

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 545
  • Rating: +25/-21
  • Joey
    • View Profile
Re: Glow in the Calc
« Reply #19 on: December 02, 2009, 06:56:17 am »
me neither x.x exams suck =[
Logged

Offline GunGodTheGreat

  • LV1 Newcomer (Next: 20)
  • *
  • Posts: 8
  • Rating: +0/-0
    • View Profile
Re: Glow in the Calc
« Reply #20 on: March 03, 2010, 08:29:18 pm »
hmmm the leds sound like a cool idea, once my nspire gets old i might have to try that, or maby even soon lol. The power problem, just get a couple of those advanced lithium energizer batterys. They really do last 10X longer they arnt kidding.
Logged

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Glow in the Calc
« Reply #21 on: March 03, 2010, 09:54:19 pm »
are they pretty expensive, though? Just E2 energizers were like $12 for 4 AAAs over where I live
Logged

Offline GunGodTheGreat

  • LV1 Newcomer (Next: 20)
  • *
  • Posts: 8
  • Rating: +0/-0
    • View Profile
Re: Glow in the Calc
« Reply #22 on: March 03, 2010, 10:06:09 pm »
ya but they are worth the price :)
Logged

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Glow in the Calc
« Reply #23 on: March 03, 2010, 10:50:20 pm »
True, altough I felt sad when I used my TI-83+ to program in 2002 and would go through an entire set every two months :(. I finally went for the cheap dollar store batteries in pack of 12 that lasts two weeks. They lasted four times shorter, but at $1.49 for 12 it was worth the price. The only issue: the expiration dates on these generally were pretty close and sometimes one battery didn't work at all in the package. I do not recommend these if you don't use your calc often and I especially do not recommend them for Nspire usage. They are more effective for people who program
Logged

Offline jsj795

  • LV9 Veteran (Next: 1337)
  • *********
  • Posts: 1105
  • Rating: +84/-3
    • View Profile
Re: Glow in the Calc
« Reply #24 on: March 04, 2010, 09:46:08 am »
I have total of 8 rechargeable batteries, 4 for 84 and the other 4 for 89.
And yes, I got my TI89T last saturday! :D
Logged


Spoiler For funny life mathematics:
1. ROMANCE MATHEMATICS
Smart man + smart woman = romance
Smart man + dumb woman = affair
Dumb man + smart woman = marriage
Dumb man + dumb woman = pregnancy
2. OFFICE ARITHMETIC
Smart boss + smart employee = profit
Smart boss + dumb employee = production
Dumb boss + smart employee = promotion
Dumb boss + dumb employee = overtime
3. SHOPPING MATH
A man will pay $2 for a $1 item he needs.
A woman will pay $1 for a $2 item that she doesn't need.
4. GENERAL EQUATIONS & STATISTICS
A woman worries about the future until she gets a husband.
A man never worries about the future until he gets a wife.
A successful man is one who makes more money than his wife can spend.
A successful woman is one who can find such a man.
5. HAPPINESS
To be happy with a man, you must understand him a lot and love him a little.
To be happy with a woman, you must love her a lot and not try to understand her at all.
6. LONGEVITY
Married men live longer than single men do, but married men are a lot more willing to die.
7. PROPENSITY TO CHANGE
A woman marries a man expecting he will change, but he doesn't.
A man marries a woman expecting that she won't change, and she does.
8. DISCUSSION TECHNIQUE
A woman has the last word in any argument.
Anything a man says after that is the beginning of a new argument.

Girls = Time * Money (Girls are a combination of time and money)
Time = Money (Time is money)
Girls = Money squared (So, girls are money squared)
Money = sqrt(Evil) (Money is also the root of all evil)
Girls = sqrt(Evil) squared (So, girls are the root of all evil squared)
Girls = Evil (Thus, girls are evil)
*Girls=Evil credit goes to Compynerd255*

Offline JoeyBelgier

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 545
  • Rating: +25/-21
  • Joey
    • View Profile
Re: Glow in the Calc
« Reply #25 on: March 04, 2010, 10:49:50 am »
((old topic revival :D ))
Logged

Offline Zera

  • LV8 Addict (Next: 1000)
  • ********
  • Posts: 737
  • Rating: +82/-7
  • Monochrome Artisan
    • View Profile
Re: Glow in the Calc
« Reply #26 on: March 04, 2010, 01:01:01 pm »
Unfortunately, luminescent materials aren't that strong. They wouldn't produce a suitable amount of light to view a screen image in the dark. (especially considering the material would be located behind the screen, reducing the amount of light it might capture)

Your best bet is to use the same kind of principle found in watch backlights:

"In an Indiglo watch, a very thin panel uses high voltage to energize phosphor atoms that produce light. The panel itself is extremely simple. As described in the Timex patent, you take a thin glass or plastic layer, coat it with a clear conductor, coat that with a very thin layer of phosphor, coat the phosphor with a thin plastic and then add another electrode. Essentially, what you have is two conductors (a capacitor) with phosphor in between. When you apply 100 to 200 volts AC (alternating current) to the conductors, the phosphor energizes and begins emitting photons."

Remember that any patented device must provide instructions for how the device is assembled, so the general public can reproduce the device for themselves. You can find detailed instructions for this sort of thing online.

Having four AAA batteris to power it, this kind of lighting would probably work well without diverting much power from the calculator itself. In fact, you could shunt it over to the back-up battery, and probably operate off it for a good two hours.
Logged

Offline Silver Shadow

  • Beta Tester
  • LV8 Addict (Next: 1000)
  • ********
  • Posts: 817
  • Rating: +27/-7
    • View Profile
Re: Glow in the Calc
« Reply #27 on: March 04, 2010, 04:26:13 pm »
Yeah, use the backup battery to get those 200V. XD
Logged
Former Coder of Tomorrow

Offline ztrumpet

  • The Rarely Active One
  • CoT Emeritus
  • LV13 Extreme Addict (Next: 9001)
  • *
  • Posts: 5712
  • Rating: +364/-4
  • If you see this, send me a PM. Just for fun.
    • View Profile
Re: Glow in the Calc
« Reply #28 on: March 04, 2010, 05:16:30 pm »
That's a nice idea Zera!  I doubt if I try it, but it is definitely something to ponder. :)
« Last Edit: March 04, 2010, 05:16:45 pm by ztrumpet »
Logged

Offline DJ Omnimaga

  • Clacualters are teh gr33t
  • CoT Emeritus
  • LV15 Omnimagician (Next: --)
  • *
  • Posts: 55943
  • Rating: +3154/-232
  • CodeWalrus founder & retired Omnimaga founder
    • View Profile
    • Dream of Omnimaga Music
Re: Glow in the Calc
« Reply #29 on: March 04, 2010, 09:16:32 pm »
just make sure if you mod your calc that you have a spare one in case you do something wrong :P

I myself would be scared to do anything like that with mine because I was never into messing around with electronics
Logged
Pages: 1 [2] 3   Go Up
« previous next »