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12-26-2015, 07:51 AM #49
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
Class 3B Laser

Join Date: Jan 2014
Location: Deployed to Iraq
Posts: 4,234
Rep Power: 2080
Re: Merry Christmas 2015

10 minutes until Christmas is over here in Alaska

__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

12-26-2015, 08:00 AM #50
 Class 2M Laser Join Date: Apr 2014 Location: Sydney, Australia (ɹǝpunuʍop) Posts: 514 Rep Power: 914
RB astro
Class 2M Laser

Join Date: Apr 2014
Location: Sydney, Australia (ɹǝpunuʍop)
Posts: 514
Rep Power: 914
Re: Merry Christmas 2015

Christmas in Alaska would be beautiful I'd imagine.
You know, I've only ever seen snow once.

__________________
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
are saved.
(Romans 10:9-10)
─────────────────────────────────☀

Last edited by RB astro; 12-26-2015 at 08:01 AM.

12-26-2015, 08:05 AM #51
 Class 3R Laser Join Date: Jan 2015 Location: Edmonton, Canada Posts: 1,114 Rep Power: 733
Gabe
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Join Date: Jan 2015
Posts: 1,114
Rep Power: 733
Re: Merry Christmas 2015

Quote:
 Originally Posted by RB astro Christmas in Alaska would be beautiful I'd imagine. You know, I've only ever seen snow once.
Man, I couldn't imagine that. What did it seem like to you? Did you get to touch it? What was your reaction?
__________________
More light, more better.
____________________________________________
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12-26-2015, 08:18 AM #52
 Class 2M Laser Join Date: Apr 2014 Location: Sydney, Australia (ɹǝpunuʍop) Posts: 514 Rep Power: 914
RB astro
Class 2M Laser

Join Date: Apr 2014
Location: Sydney, Australia (ɹǝpunuʍop)
Posts: 514
Rep Power: 914
Re: Merry Christmas 2015

Quote:
 Originally Posted by Gabe Man, I couldn't imagine that. What did it seem like to you? Did you get to touch it? What was your reaction?
Gabe, I almost started crying, I was 35 years old and never seen snow!
I was beyond ecstatic, I couldn't believe my eyes.

I had taken my wife and kids to a camp for a holiday in July.
It meant a trip up the mountain if we wanted to see snow but we were pressed for time.
My wife knew how much it meant to me and the kids to see snow so she insisted we go up, (she'd already seen snow before).
Luckily there was fresh snow that day and we had the best time up there.

We got out of the 4WD and just had a ball, snow fights and just taking it all in.

It was a short stay but something I'll never forget.

__________________
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
are saved.
(Romans 10:9-10)
─────────────────────────────────☀

12-26-2015, 09:21 AM #53
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
Class 3B Laser

Join Date: Jan 2014
Location: Deployed to Iraq
Posts: 4,234
Rep Power: 2080
Re: Merry Christmas 2015

Wow, I never give snow a second thought, just as soon have it be summer with it all melted again if I could, but I do remember the first time I saw it as a kid and yes, it was cool to see the first time and lots of fun.
__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

12-26-2015, 09:47 AM #54
 Class 3B Laser Join Date: May 2013 Location: Snohomish County Washington, US Posts: 3,800 Rep Power: 1086
Pi R Squared
Class 3B Laser

Join Date: May 2013
Location: Snohomish County Washington, US
Posts: 3,800
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Re: Merry Christmas 2015

I can't begin to imagine living somewhere with no snow, if you do then I have to ask where does your water come from? Spring water? Well water? Or piped in from very far away? Around here almost all of the water comes from melting snow and ice in the mountains. Unfortunately the water here where I am is well water, so I never drink it or cook with it, in most of the U.S. The well water is unsafe and is polluted with chemicals and pharmaceuticals, the spring water in remote areas especially in the mountains is safe. The bottled water I use comes from spring water in remote areas, I will not buy just any bottled water.

Alan
__________________
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___________________________________________
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12-26-2015, 11:25 AM #55
 Class 3B Laser Join Date: Nov 2012 Location: Rochester, NY Posts: 4,240 Rep Power: 2194
Pman
Class 3B Laser

Join Date: Nov 2012
Location: Rochester, NY
Posts: 4,240
Rep Power: 2194
Re: Merry Christmas 2015

Merry belated Christmas to everyone. I know I'm 1/2 a day late but I was with family so that's a good excuse.
Live in upstate NY and it's been weirdly warm. My wife and I went out driving my father's Lexus SC430 with the top down both Christmas eve and Christmas and loved it. Even saw a couple motorcycles. Really weird. Should be cold with snow. Would rather not have any even though I have a snow blower for the first time lol. It's what happens as you get old.
That being said, it's great that you got to see snow for the first time. Did you get to see any snow fall from the sky?
__________________
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12-26-2015, 02:53 PM #56
 Class 1 Laser Join Date: Nov 2015 Location: Georgia Posts: 84 Rep Power: 60
Hibro
Class 1 Laser

Join Date: Nov 2015
Location: Georgia
Posts: 84
Rep Power: 60
Re: Merry Christmas 2015

A "late" Merry Christmas from Hibro (Luis)

12-26-2015, 03:19 PM #57
 Class 3R Laser Join Date: Oct 2012 Location: S.E. Michigan U.S.A. Posts: 2,185 Rep Power: 1835
BowtieGuy
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Join Date: Oct 2012
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Posts: 2,185
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Re: Merry Christmas 2015

Better late than never, Merry Christmas Pete!
If you buying that new snowblower is keeping the snow away this year, thank you very much, I'm loving this wierd warm winter!
__________________
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12-26-2015, 08:21 PM #58
 Class 3B Laser Join Date: Jan 2014 Location: Deployed to Iraq Posts: 4,234 Rep Power: 2080
Class 3B Laser

Join Date: Jan 2014
Location: Deployed to Iraq
Posts: 4,234
Rep Power: 2080
Re: Merry Christmas 2015

Merry day after?

__________________

http://www.lexellaser.com/techinfo_wavelengths.htm

Laser Safety:
http://www.laserpointersafety.com/index.html

Angular Size Calculator; use with diode angle of radiation specification to calculate the needed lens diameter for a given FL:
http://www.1728.org/angsize.htm

Divergence to spot size calculator: http://tinyurl.com/spotsize - 1 mRad is about .057 degrees which from the earth would expand to be ~10% the diameters of the moon or sun at their distances.

Divergence Calculator: http://www.pseudonomen.com/lasers/ca...alculator.html - Measure your lasers beamwidth at 1 foot & then at a further distance to calculate the divergence.

Online calculator to determine spot intensity at different mRad's & powers @ distances: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: http://www.ophiropt.com/laser-measur...ity-calculator

How to build a laser beam expander to reduce divergence: http://tinyurl.com/BeamExpander

RHD's Relative Perceived Brightness Calculator. Compare brightness @nm: http://lsrtools.1apps.com/relativebrightness

YAG Power Calculator, i.e. convert ns @ mJ to peak power in watts http://tinyurl.com/YAG-Pulse

The forum costs more to run than donations received, if you wish to help click this link: http://laserpointerforums.com/donations.htm

_______

12-26-2015, 09:31 PM #59
 Class 1M Laser Join Date: Nov 2009 Posts: 111 Rep Power: 14
STI24
Class 1M Laser

Join Date: Nov 2009
Posts: 111
Rep Power: 14
Re: Merry Christmas 2015

Quote:
That is pretty awesome projection mapping!

12-26-2015, 10:41 PM #60
 Class 2M Laser Join Date: Apr 2014 Location: Sydney, Australia (ɹǝpunuʍop) Posts: 514 Rep Power: 914
RB astro
Class 2M Laser

Join Date: Apr 2014
Location: Sydney, Australia (ɹǝpunuʍop)
Posts: 514
Rep Power: 914
Re: Merry Christmas 2015

Quote:
 Originally Posted by Alaskan Wow, I never give snow a second thought ..... but I do remember the first time I saw it as a kid and yes, it was cool to see the first time and lots of fun.
It's pretty special when you first see snow, that's for sure.

Quote:
 Originally Posted by Pi R Squared I can't begin to imagine living somewhere with no snow, if you do then I have to ask where does your water come from? Spring water? Well water? Or piped in from very far away? Around here almost all of the water comes from melting snow and ice in the mountains. Unfortunately the water here where I am is well water, so I never drink it or cook with it, in most of the U.S. The well water is unsafe and is polluted with chemicals and pharmaceuticals, the spring water in remote areas especially in the mountains is safe. The bottled water I use comes from spring water in remote areas, I will not buy just any bottled water. Alan
Hi Alan,
For us here on our property, we have two deep wells that have submersible pumps lowered into them.
They automatically fill huge water reservoir tanks that store our water.

The water is very clean and free from any dangerous deposits, we have it analysed every year.
This water originates from the high mountains of NSW and travels underground for miles and miles.
The wells are around 100 metres deep and we have some of the best water available.
We can't/won't drink city water, it tastes awful with all that chlorination (and other stuff) and thankfully we don't have city water supply available to us so we rely on our wells.

Quote:
 Originally Posted by Pman Merry belated Christmas to everyone. Live in upstate NY and it's been weirdly warm. My wife and I went out driving my father's Lexus SC430 with the top down both Christmas eve and Christmas and loved it. Even saw a couple motorcycles. Really weird. That being said, it's great that you got to see snow for the first time. Did you get to see any snow fall from the sky?
Hi yah Pman,
We heard that it's been unseasonably warm over there, it must feel so weird to have a warm Christmas.
We're used to having scorching Christmas days usually (between 86° to 95° F).
On the odd occasion we may have a cold snap of around 72° F for Christmas.

As for snowfall, unfortunately when we went up the mountain, they had a fresh snowfall earlier but we missed it, we didn't get to see snow falling.
Oh well, one day, I'm hoping to go back and experience it.

Quote:
 Originally Posted by BowtieGuy If you buying that new snowblower is keeping the snow away this year, thank you very much, I'm loving this wierd warm winter!
It must be such a change for you not to have snow in Christmas.
__________________
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
are saved.
(Romans 10:9-10)
─────────────────────────────────☀

12-27-2015, 01:36 AM #61
 Member Join Date: Dec 2015 Location: Paris, France Posts: 35 Rep Power: 0
Geeker
Member

Join Date: Dec 2015
Location: Paris, France
Posts: 35
Rep Power: 0
Re: Merry Christmas 2015

OK I think I should say happy new years instead of Merry Christmas now

12-31-2015, 09:59 PM #62
 Class 2M Laser Join Date: Dec 2015 Location: Southern Ontario, Canada Posts: 854 Rep Power: 1170
ElectricPlasma
Class 2M Laser

Join Date: Dec 2015
Posts: 854
Rep Power: 1170
Re: Merry Christmas 2015

Quote:
 Originally Posted by Geeker OK I think I should say happy new years instead of Merry Christmas now
Agreed

Happy new years everyone! Have a good one and make it count
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