What is the Forever Flashlight and How Does it Work?

  • Thread starter Thread starter Integral
  • Start date Start date
  • Tags Tags
    Geek
Click For Summary
SUMMARY

The Forever Flashlight operates without batteries, utilizing a coil and a magnet to generate power through motion. Shaking the flashlight for approximately 20 seconds provides around 2 minutes of illumination. This innovative design incorporates a capacitor and basic circuitry to store the generated energy, making it a sustainable lighting solution. The discussion also touches on various geeky gifts received during the holiday season, highlighting the intersection of technology and personal interests among forum members.

PREREQUISITES
  • Understanding of electromagnetic induction principles
  • Familiarity with basic electronic components like capacitors and coils
  • Knowledge of sustainable energy concepts
  • Awareness of popular culture references related to geek and nerd identities
NEXT STEPS
  • Research the principles of electromagnetic induction in depth
  • Explore the design and functionality of capacitors in energy storage
  • Investigate other sustainable lighting technologies, such as solar-powered lights
  • Examine the cultural significance of "geek" and "nerd" identities in modern society
USEFUL FOR

Electronics enthusiasts, sustainable energy advocates, and individuals interested in the cultural aspects of technology and geek culture will benefit from this discussion.

Integral
Staff Emeritus
Science Advisor
Homework Helper
Gold Member
Messages
7,225
Reaction score
66
My faviorite (Next to the complete Far Side Collection!)

Is the Forever Flashlight No batteries needed! It will never run down! Pretty cool, It Has a coil and a small magnet mounted in the handle, the magnet is free to slide back and forth through the coil, thus charging a small Cap (some circiutry involved) About 20sec of shaking gives about 2min of good light.
 
Last edited:
Computer science news on Phys.org
Oh that's cool!

I didn't get any good geek gifts. :(
 
Er... a best buy gift certificate card?


All the rest of my gifts were the opposite of geeky! Japanese rice bowl & chopsticks, giant Hershey's kiss, Harry Potter #5. But I liked 'em all; please don't tell me this means I'm turning into a non-geek!
 
Last edited:
HP #5 nearly qualifies as a geek gift, what ever, it is a good book. Enjoy!
 
Nothing geeky

a. perfume

b. a woman's phone number
 
1)quality gyro
2)two sci books
3)gift certificates to book stores
 
I bought myself a gift, does that qualify? :wink:


DVD: Amelie, a film by Jean-Pierre Jeunet (French movie)

A real feel-good movie! If you haven't seen it: http://www.monas.nl/see/movamelie.htm You must!
 
Last edited by a moderator:
Originally posted by Monique
I bought myself a gift, does that qualify? :wink:


DVD: Amelie, a film by Jean-Pierre Jeunet (French movie)

A real feel-good movie! If you haven't seen it: http://www.monas.nl/see/movamelie.htm You must!

We watched (or should I say Read!) that movie a few months back, ...

humm... I fell asleep!

Thats the trouble with watching movies while lying on the sofa.
 
Last edited by a moderator:
I got Richard Feynman's 'Six not so Easy Pieces' in Audio(CD) and book form.
 
  • #10
I got the rest of the Harry Potter series for myself. (I can't very well read the 5th one if I don't remember the other 4, right? )


Oh, I'm going to be getting a math textbook for my birthday on the 9th (woulda gotten it for Christmas, but I didn't let my folks know in time). That's geeky enough. :smile:
 
  • #11
I got Tsunami a radio controlled car to chase Zoobie with[the kitten, not the member].

I also got her a George Foreman grill in honor of Boxing Day.

I got walkie talkies...that's kind of nerdy. This way Tsunami figures I can't hide anymore. Really they are very useful on start-ups. This prevents a lot of yelling and walking.
 
  • #12
I got a textbook on Topology, an Isaac Asimov book, The Mummy II, Enemy at the Gates, some PJ's, a Rage Against the Machine VHS, and a textbook on Mathematical Physics.
 
  • #13
A DVD player for my computer.
 
  • #14
Originally posted by Ivan Seeking
I got Tsunami a radio controlled car to chase Zoobie with[the kitten, not the member].

Which came first the member name or the kitten? :smile:

My wife got me a radio controlled car to chase our dog with. It's fun isn't it?

I also got a battery operated star finder that lights up and can show the area of the sky where planets are, star constellations, and a few other objects. If that ain't nerdy, I don't know what is.
 
  • #15
An online gift certificate to a book store.
At least my grandma thought it was boring.

I got a rain poncho from my sister and paper lantern from my parents. It was funny when i opened a cool lookin present that was actually a lamp shade. WTH?

(to self): I just don't get these guys.
 
  • #16
Originally posted by Artman
Which came first the member name or the kitten? :smile:

My wife got me a radio controlled car to chase our dog with. It's fun isn't it?

I also got a battery operated star finder that lights up and can show the area of the sky where planets are, star constellations, and a few other objects. If that ain't nerdy, I don't know what is.

Member.
Yes!
Beyond a doubt, totally nerdy.
 
  • #17
I received nothing at all. Is that Geeky enough for you?

Of course, I did run out to get myself The Lord of the Rings: The Two Towers Extended Edition DVD the day after Christmas. Worst and Only Gift I've received for this year. A little sad, don't you think?
 
  • #18
Well, my family doesn't do presents either :)

Instead I made some really good snacks.. mmmhm!
 
  • #19
heh, My family spent more time eating than opening presents. More time was spent in the preperation of dinner like setting up the table rather than the tree itself.
 
  • #20
Apparently Christmas isn't over for me because I got more presents today.

I got 50 CD-R's, Richard Feynman's Six Easy Pieces, and some black leather pants.
 
  • #21
Originally posted by Sting
[..] and some black leather pants.
 
  • #22
Black leather pants??
That sounds nerdy
I could never bring myself to wear that, but that's just me.

I got a cool sweater that I'm wearing now.
 
  • #23
Originally posted by photon
Black leather pants??
That sounds nerdy
I could never bring myself to wear that, but that's just me.

I got a cool sweater that I'm wearing now.

Humm... I always thought sweaters were warm!
 
  • #24
No, the sweater isn't warm, I am. It just keeps me from losing heat.

Sweaters are nerdy, too. I have a math/science teacher that has tons of sweaters. He wears a different one almost every day.
 
  • #25
Originally posted by Sting
and some black leather pants.

For your other career as a rock star?

For riding motorcycles?

For gettin down at the disco tech?
 
  • #26
smooth operator! :wink:
 
  • #27
I got no gifts...


Got a card from Greg, though...*grins*
 
  • #28
Originally posted by Zero
I got no gifts...


Got a card from Greg, though...*grins*

Gosh Zero, that sucks!

Here's a gift from me. Remember on June 5th, 2003, when I said you were wrong?

I take it back.

Merry Christmas[/size]
 
  • #29
Originally posted by photon
Black leather pants??
That sounds nerdy
ummm...I've got to say that I've never equated black leather pants with nerds. In fact, the whole idea of a nerd in black leather pants just creeps me out!
 
  • #30
Originally posted by Ivan Seeking
Gosh Zero, that sucks!

Here's a gift from me. Remember on June 5th, 2003, when I said you were wrong?

I take it back.

Merry Christmas[/size]
LMAO!


OK, thanks...
 

Similar threads

Motion-powered GPS tracker to install permanently inside a bicycle frame
  • · Replies 19 ·
Replies
19
Views
6K
Undergrad Direct and alternating current, a personal approach to understand them
  • · Replies 1 ·
Replies
1
Views
2K
Undergrad Understanding Self-Inductance of a Coil: How Does it Happen?
  • · Replies 23 ·
Replies
23
Views
4K
How Do You Calculate Energy Harvested from a Shaken Electromagnet Device?
  • · Replies 1 ·
Replies
1
Views
2K
Electromagnetics: Non-Symetrical coil with external iron
  • · Replies 4 ·
Replies
4
Views
3K
Understanding relationships in Induction Heating circuits
  • · Replies 1 ·
Replies
1
Views
3K
What if Gravity could be controlled?
  • · Replies 1 ·
Replies
1
Views
4K
Undergrad Progress In Calculating The HLbL Contribution To Muon g-2
  • · Replies 0 ·
Replies
0
Views
2K
Can a Hand-Warmth Powered Stirling Engine Light Up LEDs?
  • · Replies 9 ·
Replies
9
Views
13K
What Type of Audio Amplifier is Best for Sonoluminescence Experiments?
  • · Replies 7 ·
Replies
7
Views
2K