Results 1 to 5 of 5

Thread: Lasers pointed at planes

  1. #1
    Banned
    Join Date
    Jan 2012
    Location
    earth's crust
    Posts
    17,838

    Lasers pointed at planes

    http://gma.yahoo.com/blogs/abc-blogs...opstories.html

    hmmm..what kinda lasers do this? Not laser pointers, right?

    Who would even think of doing that anyway?

  2. #2
    Campaign Veteran since9's Avatar
    Join Date
    Jan 2010
    Location
    Colorado Springs, Colorado, USA
    Posts
    6,787
    Quote Originally Posted by davidmcbeth View Post
    http://gma.yahoo.com/blogs/abc-blogs...opstories.html

    hmmm..what kinda lasers do this? Not laser pointers, right?

    Who would even think of doing that anyway?
    Our eyes are most sensitive to the frequencies in the green wavelength. This makes sense, as it's both in the middle of the visible spectrum, as well as the frequency most often reflected by vegetation. Thus, a 5 mW laser in green appears brighter than the same wattage in either red or blue: "The human eye perceives pure green light 800%, 2,000%, and 19,000% brighter than red, blue, and purple light respectively." - Source

    That same source makes near 1 W laser pointers (close to 200 times more powerful than the 5 mW ones used in the classroom). According to them, "Under review by Guinness World Records, the Spyder 3 Krypton is the world's brightest handheld laser. Our Earth's atmosphere ends at 62 miles, but the Krypton goes beyond as it breaks through our atmosphere, into outer space. With its extreme range of 85 miles, the S3 Krypton is the first and only handheld laser visible from outer space. Directly viewing the dot of the Krypton <1W laser (86 million lux) will appear over 8,000 times brighter than looking directly at the sun. Safety goggles are a must."

    I saw one in operation two months ago at an outdoor astronomical observation gathering. Unbelievable! I can certainly see how anything more than a split second could inflict eye damage.
    The First protects the Second, and the Second protects the First. Together, they protect the rest of our Bill of Rights and our United States Constitution, and help We the People protect ourselves in the spirit of our Declaration of Independence.

  3. #3
    Regular Member PFC HALE's Avatar
    Join Date
    Jun 2012
    Location
    earth
    Posts
    492
    HOPE FOR THE BEST, EXPECT THE WORST, PREPARE FOR WAR

  4. #4
    Regular Member PFC HALE's Avatar
    Join Date
    Jun 2012
    Location
    earth
    Posts
    492
    beat me to it.. lol
    HOPE FOR THE BEST, EXPECT THE WORST, PREPARE FOR WAR

  5. #5
    Regular Member
    Join Date
    Jan 2010
    Location
    Urban Skeet City, Alabama
    Posts
    897
    Need Moar Fax.
    It takes a village to raise an idiot.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •