Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Science & Lasers



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 01-21-2011, 02:36 AM #49
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: Can we destroy an asteroid with a high powered laser?

@coherent light then what? No currently known celestial body is higher than a 0 on the torino scale, so no big space rock is coming to flatten us .


__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 01-21-2011, 02:52 AM #50
Coherent Light's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Hill Country, TX
Posts: 2,185
Rep Power: 51
Coherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond repute
Coherent Light Coherent Light is offline
Class 3R Laser
Coherent Light's Avatar
 
Join Date: Jul 2010
Location: Hill Country, TX
Posts: 2,185
Rep Power: 51
Coherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

UMmm Oh wait maybe just maybe there is a Big Ass Rock we haven't seen coming our way..Nah we would already have it charted and logged in the minor planet center database, SO since it's not in the system it's not out there somewhere....Ah we can all rest easy now!
__________________
Coherent::
Coherent Light is offline   Reply With Quote
Old 01-21-2011, 08:50 PM #51
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: Can we destroy an asteroid with a high powered laser?

@Coherent Light there could be error long term, but if it was anytime soon we would definately know.
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit
Tikilaser is offline   Reply With Quote
Old 01-21-2011, 09:39 PM #52
Coherent Light's Avatar
Class 3R Laser
 
Join Date: Jul 2010
Location: Hill Country, TX
Posts: 2,185
Rep Power: 51
Coherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond repute
Coherent Light Coherent Light is offline
Class 3R Laser
Coherent Light's Avatar
 
Join Date: Jul 2010
Location: Hill Country, TX
Posts: 2,185
Rep Power: 51
Coherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond reputeCoherent Light has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

Don't discount the Ort Cloud anything screaming in from out there will be Cold & Dark, so that We won't see it Optically or in Infared until it's Too close to deal with unless We already have a defense option in place.
__________________
Coherent::
Coherent Light is offline   Reply With Quote
Old 01-23-2011, 08:23 PM #53
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

With radio telescopes you can see objects that are really really cold, so I wouldn't worry about that. Unless the comet is ~2.7K which is equal to the background radiation. But with the nice & warm sun in our solar system that's not gonna happen.
Bluefan is offline   Reply With Quote
Old 01-24-2011, 01:44 AM #54
Tonga's Avatar
Class 2M Laser
 
Join Date: Nov 2010
Location: Kansas
Posts: 544
Rep Power: 63
Tonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond repute
Tonga Tonga is offline
Class 2M Laser
Tonga's Avatar
 
Join Date: Nov 2010
Location: Kansas
Posts: 544
Rep Power: 63
Tonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

You're still to close for this one man! Heck if Russia gets there first it'll probably hit us twice! Just kidding!
I think we can nudge it to a different orbit, but would it be a safe one is the real question.
__________________
Tonga,
A DISCIPLINE OF LIGHT

INR is 2.4, Hgb is 4.6, PLT is 95 and Fib is 65; give 20 units of cryo, 1 unit of platelets, 3 units of RCL and 2 units of FFP right now please!
Tonga is offline   Reply With Quote
Old 01-24-2011, 02:14 AM #55
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Angry Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Tonga View Post
You're still to close for this one man! Heck if Russia gets there first it'll probably hit us twice! Just kidding!
I think we can nudge it to a different orbit, but would it be a safe one is the real question.
DOES NOBODY READ MY POST #23 (and most of my others)????????????

JESUS CHRIST!!!


EDIT: Sorry.....
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit

Last edited by Tikilaser; 01-24-2011 at 02:18 AM.
Tikilaser is offline   Reply With Quote
Old 01-24-2011, 09:31 AM #56
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Tikilaser View Post
As I said it is currently a 0 on the torino scale as the keyhole is only 600m wide and the chances of it going through are slim to none. It has less than a 0.1% chance of impact and is not a concern to any extent. Even if it passes through, there is about a 20% chance of an impact that would cause any problem due to the fact that the earths oceans cover almost 80% of earth, and the asteroid isn't big enough to cause a tsunami large enough to reach land, let alone cause damage. Over all less than a 0.02% chance of impact. Don't worry, we will be fine.
To dig up the post in question. We keep track of tens of thousands of satellites, a silimar number of pieces of space debris and we catalog over a million asteroids in the asteriod belt of our solar system. If anything comes flying at us, we'll know it or it's too small to ever notice it's there (perhaps a shooting star would be visible, but that's all).
Bluefan is offline   Reply With Quote
Old 01-24-2011, 01:06 PM #57
Tikilaser's Avatar
Class 2 Laser
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Tikilaser Tikilaser is offline
Class 2 Laser
Tikilaser's Avatar
 
Join Date: Sep 2010
Location: Michigan
Posts: 407
Rep Power: 10
Tikilaser is a jewel in the roughTikilaser is a jewel in the roughTikilaser is a jewel in the rough
Default Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Bluefan View Post
To dig up the post in question. We keep track of tens of thousands of satellites, a silimar number of pieces of space debris and we catalog over a million asteroids in the asteriod belt of our solar system. If anything comes flying at us, we'll know it or it's too small to ever notice it's there (perhaps a shooting star would be visible, but that's all). .
Thanks for posting that, I was trying to avoid double posting but I wanted to quote that post onto this page.

PS: Shooting stars are small comets that burn up in our atmosphere. (You probably already knew that but....)
__________________
40mW 532nm WickedLasers Evolution Pro (Dead)
5mW 532nm Laserglow Galileo

120mW 450nm Danefex Minisabre (Dead)

Optotronics Premium Optics Kit

Last edited by Tikilaser; 01-24-2011 at 01:09 PM.
Tikilaser is offline   Reply With Quote
Old 01-24-2011, 07:09 PM #58
AJ_Dual's Avatar
Class 2M Laser
 
Join Date: Aug 2007
Location: Wisconsin
Posts: 528
Rep Power: 99
AJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond repute
Send a message via Yahoo to AJ_Dual
AJ_Dual AJ_Dual is offline
Class 2M Laser
AJ_Dual's Avatar
 
Join Date: Aug 2007
Location: Wisconsin
Posts: 528
Rep Power: 99
AJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond reputeAJ_Dual has a reputation beyond repute
Send a message via Yahoo to AJ_Dual
Default Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Lazy Laser View Post
There was a show on the Discovery channel yesterday about destroying asteroids,comets..ect
Before they hit the earth and they brought lasers up as one of the options for melting icy comets
so that the gas that comes from the melting ice would in theory push it hopefully into another direction.

Sure enough they whip out the Hercules by LaserGlow for a small scale test.

Small scale test: Fail
Use of safety glasses: Certainly a win!
I saw that test. I LOL'ed. There was no proportionality whatsoever in that test, it made for good video though. Even at the scale of the snowball on that frictionless air-hockey table it was like trying to use a laser during the last 30 seconds before impact.

The albedo of your average comet looks to be darker than roofing tar. It would absorb the laser radiation quite nicely. Should have covered the whole thing in coal dust. A better test would have been a much better isolation frictionless table, and seeing if you could get any jetting from the comet stand-in to impart any velocity with a laser.

If you have an intercept that begins even 3 months before impact on a comet, if you can impart even so much as .5m/s radial velocity to it from it's main course, lasers, bombs, kinetic impactors, solar sails or mirrors, that's 7776km off it's original impact point, a little over half of one earth diameter. Give it six months, or enough oomph to make it 1m/s imparted velocity, that's one whole Earth diameter. And presumably it won't impact dead-center, so there's a shorter distance to the Earth's edge you could aim for.

And that's not counting if there's any accruing gravitational effects from the Earth or Sun that would compound that distance change even further.
AJ_Dual is offline   Reply With Quote
Old 01-24-2011, 11:12 PM #59
Tonga's Avatar
Class 2M Laser
 
Join Date: Nov 2010
Location: Kansas
Posts: 544
Rep Power: 63
Tonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond repute
Tonga Tonga is offline
Class 2M Laser
Tonga's Avatar
 
Join Date: Nov 2010
Location: Kansas
Posts: 544
Rep Power: 63
Tonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond reputeTonga has a reputation beyond repute
Talking Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Tikilaser View Post
DOES NOBODY READ MY POST #23 (and most of my others)????????????

JESUS CHRIST!!!


EDIT: Sorry.....
Yeah, I read your posts, sorry I just wanted to be a smart butt.
__________________
Tonga,
A DISCIPLINE OF LIGHT

INR is 2.4, Hgb is 4.6, PLT is 95 and Fib is 65; give 20 units of cryo, 1 unit of platelets, 3 units of RCL and 2 units of FFP right now please!
Tonga is offline   Reply With Quote
Old 02-23-2011, 12:14 AM #60
Member
 
Join Date: Feb 2011
Location: SE Denver, Colorado
Posts: 41
Rep Power: 0
DakarNick is on a distinguished road
DakarNick DakarNick is offline
Member
 
Join Date: Feb 2011
Location: SE Denver, Colorado
Posts: 41
Rep Power: 0
DakarNick is on a distinguished road
Default Re: Can we destroy an asteroid with a high powered laser?

Maybe it is evil and will approach earth and just hover there until Leeloo and Korben Dallas come to the rescue.
__________________
IQS 405nm pen "5mW" modified for focusing
IQS 532nm Super #100-006
IQS 532nm #120 pen (in the mail!)

Last edited by DakarNick; 02-23-2011 at 12:16 AM.
DakarNick is offline   Reply With Quote
Old 02-23-2011, 06:38 AM #61
Plan B's Avatar
Class 1M Laser
 
Join Date: Jan 2011
Location: Stettler, AB. Canada.
Posts: 131
Rep Power: 9
Plan B is a jewel in the roughPlan B is a jewel in the roughPlan B is a jewel in the rough
Plan B Plan B is offline
Class 1M Laser
Plan B's Avatar
 
Join Date: Jan 2011
Location: Stettler, AB. Canada.
Posts: 131
Rep Power: 9
Plan B is a jewel in the roughPlan B is a jewel in the roughPlan B is a jewel in the rough
Default Re: Can we destroy an asteroid with a high powered laser?

I'm surprised no one has mentioned Gravity Tractors. Asteroids have different densities and different structural and elemental make ups. So do planets, Kepler just found a planet that has a density about the same as styrofoam. Trying to blow up a rubble pile asteroid would cause more issues then it solves. Trying to push one with a blast or attached rockets would have similar results.

Last edited by Plan B; 02-23-2011 at 06:51 AM.
Plan B is offline   Reply With Quote
Old 02-23-2011, 09:48 AM #62
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

A gravity tractor almost falls in the same category as Tractor beam - Wikipedia, the free encyclopedia. Gravity is far too weak to do use it, the tiny force gravity has can always safely be aplied directly to the asteroid. Unless it's a huge ball of cotton candy and you're pushing with a needle, but that scenario hardly sound threadning or realistic.
Bluefan is offline   Reply With Quote
Old 02-23-2011, 03:37 PM #63
Krogith's Avatar
Class 3R Laser
 
Join Date: Dec 2010
Location: USA Cali
Posts: 1,195
Rep Power: 53
Krogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond repute
Krogith Krogith is offline
Class 3R Laser
Krogith's Avatar
 
Join Date: Dec 2010
Location: USA Cali
Posts: 1,195
Rep Power: 53
Krogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond reputeKrogith has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

Quote:
Originally Posted by Bluefan View Post
A gravity tractor almost falls in the same category as Tractor beam - Wikipedia, the free encyclopedia. Gravity is far too weak to do use it, the tiny force gravity has can always safely be aplied directly to the asteroid. Unless it's a huge ball of cotton candy and you're pushing with a needle, but that scenario hardly sound threadning or realistic.
If the Asteroid is discovered soon enough, the Gravity Tractor is a Real solution that would work. It is possible. You have to remember, Gravity is the reason it's moving to begin with from the sun's gravity (or another Mass in Space). And it would only take a Slight Alteration Of the Asteroid's Course to make it miss the earth. (As long as it's discovered soon enough) It is a viable solution.

All these solution depend on us seeing it soon enough ( not just this one) because they all mostly take us launching something from earth and then to reach the object at a soon enough point that we can change it's path in some way. So they all will take the (have to see it in time) Idea. Other wise we have no way to Stop it from "Man's Means", if we don't see it soon enough.
__________________
--Some Pictures--


Click This Link!!! 50 mW Laser does Eye damage from his friend waving it in his face...
"Yeah you guessed it... At school.."-Wear The Proper Goggles for Your Protection-Click Here, Please READ!
Above >5mW you can damage Your Eyes with a Reflection in 1/100th of a second. It Doesn't Matter How Dim it "Looks"! It is still dangerous!
Above >100 mW you can burn your retina off any glossy surface just Reflecting The Beam off to your Eye!It's More Than Just a Mirror that you need to be Careful Of!!
And remember There is Never A Perfectly Diffused Surface, Do You want to Risk it?!

Last edited by Krogith; 02-23-2011 at 03:42 PM.
Krogith is offline   Reply With Quote
Old 02-23-2011, 05:17 PM #64
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Can we destroy an asteroid with a high powered laser?

It's a real solution, but a useless solution. The example on the wikipedia site metions pulling a 100m large, 1 million metric tons asteriod with a 19200kg spacecraft for 10 years. That a quite a heavy spacecraft for a very long time. All that just to push with 0.032 newton. On earth that's equivalent to the gravitational force of 3 gram of material, less than a single sheet of paper. You need quite a weird asteroid if it can't take being pushed so litte.
You only need one day of pushing with the force you lift a heavy bag.
Bluefan is offline   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








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
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 01:22 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) 2017 Laser Pointer Forums, LLC