LPF Laser Pointer Company Database








Welcome to Laser Pointer Forums! If you are looking for a laser you may want to check out the database of laser pointer companies. The link will open in a new window for your convenience.

Green Laser Pointers Blue Laser Pointers Red Laser Pointers
Yellow Laser Pointers Violet Laser Pointers Orange Laser Pointers
Laser Pointers by Power - 1 Watt+ Laser Pointers by Power - 500mW+ Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes


























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Off-Topic > Other

LPF Database of Laser Pointer Companies






Reply
 
LinkBack Thread Tools Display Modes
Old 11-16-2016, 01:51 AM #465
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Space Discussion Thread

Quote:
Originally Posted by AaronT View Post
My first guess was it was a type of photon pressure but this is orders of magnitude above the thrust of a photon rocket of the same power.

I'm hedging my bets that the thrust is produced by some effect on the Higgs Field or other Space/Time effect.
I cannot be simply photon pressure indeed - you could achieve that by just opening up one side of the resonator cavity and microwaves would shoot out propelling you in the opposite direction. This would at best result in a force -far- lower than described.

I suspect it has to do with some interaction with atmosphere, even a very dilute one like in a good vacuum chamber. Launching off ionized air would easily make this amount of thrust possible, and if you design for it quite a lot more.

One example of such a device is this: https://www.youtube.com/watch?v=hv__Zln-h5Q

There is some BS about anti-gravity surrounding these contraptions, but they basically work by ionizing air and blasting the ions down at reasonable speed (25 kV or so), resulting in upwards forces many magnitudes larger than either photon rockets or this new EM drive concept.

These 'lifters' actually do work in a modest vacuum too. If you pull pressure down to 0.01 atm or something they still fly.


Benm is online now   Reply With Quote








Old 11-16-2016, 02:32 AM #466
AaronT's Avatar
Class 2 Laser
 
Join Date: Jun 2016
Posts: 387
Rep Power: 619
AaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond repute
AaronT AaronT is online now
Class 2 Laser
AaronT's Avatar
 
Join Date: Jun 2016
Posts: 387
Rep Power: 619
AaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond reputeAaronT has a reputation beyond repute
Default Re: Space Discussion Thread

Quote:
Originally Posted by Benm View Post
I cannot be simply photon pressure indeed - you could achieve that by just opening up one side of the resonator cavity and microwaves would shoot out propelling you in the opposite direction. This would at best result in a force -far- lower than described.

I suspect it has to do with some interaction with atmosphere, even a very dilute one like in a good vacuum chamber. Launching off ionized air would easily make this amount of thrust possible, and if you design for it quite a lot more.

One example of such a device is this: https://www.youtube.com/watch?v=hv__Zln-h5Q

There is some BS about anti-gravity surrounding these contraptions, but they basically work by ionizing air and blasting the ions down at reasonable speed (25 kV or so), resulting in upwards forces many magnitudes larger than either photon rockets or this new EM drive concept.

These 'lifters' actually do work in a modest vacuum too. If you pull pressure down to 0.01 atm or something they still fly.
The paper quotes a vacuum spec of 8 x 10 -6 Torr "or better" for all testing

Outer space 1 × 10 −6 to < 1 × 10 −17
__________________
405nm 9.5mW, 55mW, Pens
405nm 60mW G303
445nm 1547mW Thor Link

532nm 47mW G303,
532nm 6.5mW, 24nW Pens

638nm <1mW Pen
650nm 63mW G303
650nm 42mW Pen


Hyperion LPM

Last edited by AaronT; 11-16-2016 at 02:33 AM.
AaronT is online now   Reply With Quote
Old 11-17-2016, 02:05 AM #467
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Space Discussion Thread

At the pressure the 'lifters' stop working, but those a relatively low power devices producing a lot of force per watt of electrical input (those things in the video run off 25 kV, but probably draw in the order of 1 watt of power).

One concern i have it might be something else, even outgassing of atmosphere that adhered to the metal or even the metal evaporating from being heated by the micowaves.

The problem is that the thrust is just SO tiny for the amount of power produced. It's something that is quite bulky, uses as much power as a small drown, but produces an (additional to its own gravitational pull on earh) amount of force that lifts a grain of sugar.

I think this has to be proven in space, where one of these devices can operate for a long period of time. One test would be to set it just to keep increasing it's orbit, powered by solar panels. Downside is that this would have to be tested at a very high orbit (probably beyond geostationary) for the thrust to overcome the drag of the solar panels to power it.
Benm is online now   Reply With Quote
Old 12-11-2016, 06:32 PM #468
Rivem's Avatar
Class 2M Laser
 
Join Date: Feb 2016
Location: New Mexico and/or Colorado, USA
Posts: 762
Rep Power: 1180
Rivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond repute
Rivem Rivem is online now
Class 2M Laser
Rivem's Avatar
 
Join Date: Feb 2016
Location: New Mexico and/or Colorado, USA
Posts: 762
Rep Power: 1180
Rivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond repute
Default Re: Space Discussion Thread

Hey guys, just as a reminder, the Geminid meteor shower is going to peak December 13th. It's one of the best regular showers, but it will have some interference from moonlight.
__________________
Now in the Member Collections Section: Rivem's Collection.


Back to the EE degree grind after MLK day, as usual feel free to PM me. I'll try to stay somewhat active.
Rivem is online now   Reply With Quote
Old 01-13-2017, 06:22 PM #469
Rivem's Avatar
Class 2M Laser
 
Join Date: Feb 2016
Location: New Mexico and/or Colorado, USA
Posts: 762
Rep Power: 1180
Rivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond repute
Rivem Rivem is online now
Class 2M Laser
Rivem's Avatar
 
Join Date: Feb 2016
Location: New Mexico and/or Colorado, USA
Posts: 762
Rep Power: 1180
Rivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond reputeRivem has a reputation beyond repute
Default Re: Space Discussion Thread

Hey guys, Venus is at its greatest eastern elongation tonight, so you should have the best view of it right after nightfall.
__________________
Now in the Member Collections Section: Rivem's Collection.


Back to the EE degree grind after MLK day, as usual feel free to PM me. I'll try to stay somewhat active.
Rivem is online now   Reply With Quote
Old 01-13-2017, 11:04 PM #470
Hap's Avatar
Hap Hap is online now
Super Moderator
 
Join Date: Sep 2013
Location: Central California Coast
Posts: 6,395
Rep Power: 3120
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Hap Hap is online now
Super Moderator
Hap's Avatar
 
Join Date: Sep 2013
Location: Central California Coast
Posts: 6,395
Rep Power: 3120
Hap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond reputeHap has a reputation beyond repute
Send a message via Skype™ to Hap
Default Re: Space Discussion Thread

As I'm typing this I have Venus right above our cruise ship!

-Alex
__________________
My Lasers:
650nm: laserbtb LP650-5 (peak 15mW)
635nm: Laserglow Libra (peak 4mW)
593.5nm: Laserglow Rigel-2 (peak 1mW)
532nm: LaserGlow Aries-20 (Waiting for arrival!)
532nm: Laserglow Anser (peak 4mW)
473nm: Laserglow Aquarius-2 (peak 2mW)
450nm: laserbtb LP450-1 (peak 3mW)
405nm: laserbtb LP405-5 (peak 10mW)

"Open your eyes, look within. Are you satisfied with the life you're living?" -Bob Marley
“The universe is a pretty big place. If it's just us, seems like an awful waste of space.” -Carl Sagan
You are important: Pale Blue Dot

Last edited by Hap; 01-13-2017 at 11:04 PM. Reason: Wrong word :/
Hap is online now   Reply With Quote
Old 01-13-2017, 11:07 PM #471
RB astro's Avatar
Class 2M Laser
 
Join Date: Apr 2014
Location: Sydney, Australia (ɹǝpunuʍop)
Posts: 675
Rep Power: 2224
RB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond repute
RB astro RB astro is offline
Class 2M Laser
RB astro's Avatar
 
Join Date: Apr 2014
Location: Sydney, Australia (ɹǝpunuʍop)
Posts: 675
Rep Power: 2224
RB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond reputeRB astro has a reputation beyond repute
Default Re: Space Discussion Thread

Quote:
Originally Posted by Rivem View Post
Hey guys, Venus is at its greatest eastern elongation tonight, so you should have the best view of it right after nightfall.
Thanks for the heads-up Rivem.
I'll have to check it out (and maybe fire a laser beam or two at it).



RB
__________________
Andrew (RB)

─────────────────────────────────☀
For God so loved the world that He gave His only begotten Son, that whoever believes in Him
should not perish but have everlasting life.
For God did not send His Son into the world to condemn the world,

but that the world through Him might be saved.
“He who believes in Him is not condemned;
but he who does not believe is condemned already, because he has not believed in the name of the only begotten Son of God.
And this is the condemnation, that the light has come into the world, and men loved darkness rather than light, because their deeds were evil.
For everyone practicing evil hates the light and does not come to the light, lest his deeds should be exposed.
But he who does the truth comes to the light, that his deeds may be clearly seen, that they have been done in God.”
(John 3:16-21)
─────────────────────────────────☀
If you confess with your mouth, “Jesus is Lord,” and believe in your heart that God raised Him from
the dead, you will be saved.
For it is with your heart that you believe unto righteousness
and it is with your mouth that you confess
your faith and
are saved.
(Romans 10:9-10)
─────────────────────────────────☀
RB astro is offline   Reply With Quote
Old 01-14-2017, 02:07 AM #472
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 6,879
Rep Power: 2109
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: Space Discussion Thread

It's quite bright indeed. Since i live high up and have a west and south view i'm quite used to seeing it by now.
Benm is online now   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Top 50 Laser Pointer Companies - Green Lasers Top 50 Laser Pointer Companies - Blue Lasers Top 50 Laser Pointer Companies - Red Lasers
Top 50 Laser Pointer Companies - Yellow Lasers Top 50 Laser Pointer Companies - Purple Lasers Top 50 Laser Pointer Companies - Orange Lasers
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes




Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 05:57 AM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2016 Laser Pointer Forums, LLC