But the flashlight\'s beam spread out too much. Then Clark chanced upon a laser pointer . "I looked at the laser spot, and my feet just seemed to go to it," he says.Clark, for one, now carries a laser point faithfully. While such a device retails only for $10 or $15, "it gets pretty expensive buying batteries," he says, noting that his device takes three button batteries. It\'s also difficult to see the laser spot outdoors on sunny days. And Counihan says that a laser that emits a line instead of a spot might work even better.
اخبار ماهواره در تلگرامنظرات این مطلب
تعداد صفحات : 0
درباره ما
اطلاعات کاربری
خبر نامه
چت باکس
پیوندهای روزانه
آمار سایت
کدهای اختصاصی