Tahlequah Daily Press

Get the scoop!

March 26, 2013

Slate: Your laser pointer is probably illegal

For all the whining everyone's always doing about jetpacks and other tech of the future, you'd think we'd be more impressed with the teeming abundance and affordability of lasers. In fact, we're so over Light Amplification by Stimulated Emission of Radiation, we've relegated the technology to kitschy beach-shop key chains and board games for nerds.

And yet a new study shows a majority of the dinky laser pointers on the market exceed the power level limits set by the Code of Federal Regulations, which means a whole lot of twerps out there wield far more retina-burning power than they should.

That laser pointers are potentially dangerous shouldn't come as any big surprise. However, ubiquity has a way of breeding a lack of respect. And lack of respect leads people to point electromagnetic radiation at the eye holes of rival soccer clubs or helicopter and airplane pilots.

"The human eye is a fantastic optical instrument capable of concentrating light a 100,000 times onto the retina," explains Joshua Hadler, physicist and laser safety officer for the National Institute of Standards and Technology Laser Radiometry Project. "More than a few milliwatts at the cornea can be focused to a spot so small that the power density on the retina can become greater than that generated when staring into the sun."

Power limits put in place by the CFR cap laser pointers at 5 milliwatts. Anything more powerful than that is technically not a "laser pointer" — that is, a handheld laser intended to trick an audience into thinking your PowerPoint slides are even vaguely interesting. Which is why it's concerning that Hadler and his co-authors Marla Dowell and Edna Tobares found some of the laser pointers they tested to be well above the 5 milliwatt output advertised on the labels. One showoff laser pointer clocked in at an absurd 66.5 milliwatts.

Text Only
Get the scoop!
  • Biggest student loan profits come from grad students

    This week, the Congressional Budget Office projected that the federal government would earn roughly $127 billion from student lending during the next 10 years.

    April 18, 2014

  • Consumer spending on health care jumps as Affordable Care Act takes hold

    Nancy Beigel has known since September that she would need hernia surgery. She couldn't afford it on her $11,000 yearly income until she became eligible for Medicaid in January through President Barack Obama's signature health care law.

    April 18, 2014

  • Lindley, Tom.jpg Golf turns into snooze-fest without celebrities like Tiger and Phil

    The Masters lumbered on last week without two of pro golf's biggest names, Tiger Woods and Phil Mickelson, and fans changed the channel. The PGA needs someone with star power if it's going to lure people back to the game.

    April 18, 2014 1 Photo

  • Raw oysters spike U.S. rise in bacterial infections, CDC reports

    Raw oysters, so good with hot sauce, increasingly can carry something even more unsettling to the stomach: A bacteria linked to vomiting, diarrhea and pain.

    April 18, 2014

  • taylor.armerding.jpg Warren's populist pitch on student loans is off key

    Sen. Elizabeth Warren's populist rhetoric pumps up students about their loan burdens, but she conveniently neglects to mention the real problem - the exorbitant cost of college - much less how she's benefitted from those high prices.

    April 18, 2014 1 Photo

  • The case for separate beds

    The other night I slept on a twin bed in the guest room of the house I share with my husband and our two kids.
    It was the best night's sleep I've had in years.

    April 18, 2014

  • Doctors to rate cost effectiveness of expensive cancer drugs

    The world's largest organization of cancer doctors plans to rate the cost effectiveness of expensive oncology drugs, and will urge physicians to use the ratings to discuss the costs with their patients.

    April 16, 2014

  • To sleep well, you may need to adjust what you eat and when

    Sleep.  Oh, to sleep.  A good night's sleep is often a struggle for more than half of American adults.  And for occasional insomnia, there are good reasons to avoid using medications, whether over-the-counter or prescription.

    April 16, 2014

  • Low blood-sugar levels make for grousing spouses

    Husbands and wives reported being most unhappy with their spouses when their blood-sugar levels were lowest, usually at night, according to research released this week in the Proceedings of the National Academy of Sciences. Missing a meal, dieting or just being hungry may be the reason, researchers said.

    April 16, 2014

  • treadmill-very-fast.jpg Tax deduction for a gym membership?

    April marks another tax season when millions of Americans will deduct expenses related to home ownership, children and education from their annual tax bill. These deductions exist because of their perceived value to society; they encourage behaviors that keep the wheels of the economy turning. So why shouldn't the tax code be revised to reward preventive health?

    April 15, 2014 1 Photo

  • Victimized by the 'marriage penalty'

    In a few short months, I'll pass the milestone that every little girl dreams of: the day she swears - before family and God, in sickness and in health, all in the name of love - that she's willing to pay a much higher tax rate.

    April 15, 2014

  • Allergies are the real midlife crisis

    One of the biggest mysteries is why the disease comes and goes, and then comes and goes again. People tend to experience intense allergies between the ages of 5 and 16, then get a couple of decades off before the symptoms return in the 30s, only to diminish around retirement age.

    April 15, 2014

  • E-Cigarettes target youth with festivals, lawmakers say

    The findings, in a survey released Monday by members of Congress, should prod U.S. regulators to curb the industry, the lawmakers said. While e-cigarettes currently are unregulated, the Food and Drug Administration is working on a plan that would extend its tobacco oversight to the products.

    April 14, 2014

  • Search teams will send unmanned sub to look for missing Malaysian airliner

    Teams searching for a missing Malaysian airliner are planning for the first time to send an unmanned submarine into the depths of the Indian Ocean to look for wreckage, an Australian official leading the multi-nation search said Monday.

    April 14, 2014

  • Why Facebook is getting into the banking game

    Who would want to use Facebook as a bank? That's the question that immediately arises from news that the social network intends to get into the electronic money business.

    April 14, 2014

Poll

What to you think of a state Legislature proposal to forbid cities from raising the minimum wage? Choose the closest to your opinion.

The federal government should set the minimum wage across the board.
States should be allowed to raise their minimum wages, but not cities.
Both states and cities should be allowed to raise their minimum wages.
Cities should be allowed to raise their mimum wages, but not states.
There should be no minimum wage at all.
Undecided.
     View Results
Tahlequah Daily Press Twitter
Follow us on twitter
AP Video
Stocks