- Joined
- Mar 27, 2011
- Messages
- 14,125
- Points
- 113
OK, OK, I give. May everyone have scorch marks on their ceilings :beer:
LPF Donation via Stripe | LPF Donation - Other Methods
Links below open in new window
ArcticMyst Security by Avery
An Apology for Everyone
- Thread starter Thejoker301
- Start date
- Status
grainde
0
- Joined
- Jan 29, 2012
- Messages
- 3,164
- Points
- 113
And carpets, curtains, furniture... been there done all that 
- Joined
- Mar 21, 2016
- Messages
- 966
- Points
- 43
And carpets, curtains, furniture... been there done all that
Still doing it...Lol find new ones all the time
- Joined
- Nov 4, 2014
- Messages
- 1,146
- Points
- 63
Have patience. I leave feedback about 90% of the time but not always right away as soon as I receive the items. I'm a busy person but eventually when I am at the computer killing time I go to the feedback section of my acct and get caught up. You can also message them a reminder.
- Joined
- Mar 25, 2016
- Messages
- 106
- Points
- 18
How far lasers can go?
ped
0
- Joined
- Nov 25, 2008
- Messages
- 4,889
- Points
- 113
- Joined
- Mar 25, 2016
- Messages
- 106
- Points
- 18
Last edited:
- Joined
- Nov 4, 2014
- Messages
- 1,146
- Points
- 63
Depends on which postal carrier your using. FedX can go very far but UPS will not travel further than the united States.
J/kDo you mean how far will the beam travel? Well from what I have read those photons will travel all the way to the other side of the universe unless absorbed or obstructed by something. But if you mean the visible beam, the distance it will stay visible depends on the power and divergence of the laser. If you are wondering how great a distance can the flash from a laser be seen its mind blowingly far! People pointed a 1W 445 laser at the International Space Station in an experiment and it was very clearly seen from space. Not sure why they chose a blue laser over 532nm green which would have been even brighter.
I have seen these images before and it still blows my mind it was that bright and only 1mW! Lasers are pretty darn amazing. Sure gives us food for thought regarding laser safe practices and the power and potential harm we have sitting in our palms. Be safe, be smart.
Thanks for sharing this link Theodore.
Last edited:
- Joined
- Mar 25, 2016
- Messages
- 106
- Points
- 18
Depends on which postal carrier your using. FedX can go very far but UPS will not travel further than the united States.
Do you mean how far will the beam travel? Well from what I have read those photons will travel all the way to the other side of the universe unless absorbed or obstructed by something. But if you mean the visible beam, the distance it will stay visible depends on the power and divergence of the laser.
It is easier to read the posts,than write mine.and the time has passed to learn English better.:yabbem:
- Joined
- Nov 4, 2014
- Messages
- 1,146
- Points
- 63
I'm only having fun. Your English is very good. :yh:Thanks again for the link. Here is a link to the expierment I was refering to. http://www.universetoday.com/93987/amateur-astronomers-flash-the-space-station/
Cheers mate
Last edited:
Wait a sec, sorry for asking, I'm new:undecided:, but I'm getting confused here. Isn't 1mW like realy weak? I heared you need 200mW+ to burn stuff, and that ebay one has just 1mW? Yet it sais "burns stuff" in the description...
Last edited:
- Joined
- Mar 27, 2011
- Messages
- 14,125
- Points
- 113
Ebay does not allow any laser pointers over 5mW to be sold.
Sellers skirt this rule by blatantly mislabeling their products.
Sellers skirt this rule by blatantly mislabeling their products.
- Joined
- Dec 11, 2015
- Messages
- 1,628
- Points
- 113
1mW is weaker than the average presentation pointer by a little bit, and those advertised on eBay as 1mW are definitely not 1mW, not even close. The only reason that they're listed as that is because eBay doesn't allow lasers greater than standard pointer limit, which is >5mW. But, they are trying to get away with selling lasers about >5mW on eBay (above 1W if you're looking at one of the chinese 445nm lasers) so they can get money from it, obviously. The downside to this is that safety is just thrown out the window, as some people think they are actually getting a 1mW laser and as a result don't use safety glasses, potentially harming themselves. Do us all a favor and get yourself a pair of safety glasses if you choose to get a laser like this.
grainde
0
- Joined
- Jan 29, 2012
- Messages
- 3,164
- Points
- 113
You're right about the powers, 1 mW is 200 times less powerful than 200 mW.
Don't always believe the descriptions esp. from Chinese sellers. High powered lasers are often rated much higher than they actually are and low power pen lasers are often under rated ie 1 mW or 5 mW in order to sell them on sites such as ebay. :beer:
Don't always believe the descriptions esp. from Chinese sellers. High powered lasers are often rated much higher than they actually are and low power pen lasers are often under rated ie 1 mW or 5 mW in order to sell them on sites such as ebay. :beer:
1mW is weaker than the average presentation pointer by a little bit, and those advertised on eBay as 1mW are definitely not 1mW, not even close. The only reason that they're listed as that is because eBay doesn't allow lasers greater than standard pointer limit, which is >5mW. But, they are trying to get away with selling lasers about >5mW on eBay (above 1W if you're looking at one of the chinese 445nm lasers) so they can get money from it, obviously. The downside to this is that safety is just thrown out the window, as some people think they are actually getting a 1mW laser and as a result don't use safety glasses, potentially harming themselves. Do us all a favor and get yourself a pair of safety glasses if you choose to get a laser like this.
Oh, ok, i get it^^
Pman
0
- Joined
- Nov 28, 2012
- Messages
- 4,447
- Points
- 113
That was a pretty neat find and informative Theadore. +REP
- Status
