How does a hand lens work?


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Hand Lens Activities or Lessons?

Hand lenses offer young students the opportunity to explore the natural world in an inexpensive way. Usually made from plastic, hand lenses are the perfect tool for young students in the primary gr... Read More »

Things to Do With a Hand Lens for Science Lessons?

Hand lenses show the details in common objects. Flat coins resemble hills under a hand lens, while the surprising complexity of small insects, like ants, emerges into sharp detail. Magnifiers revea... Read More »

You recently purchased a quantaray lens 28-200mm D aspherical lens for your nikon D80 camera The lens will not focus on a subject unless you are at least 3 feet away Why is that's?

No. Architectural photography requires control over converging vertical lines. Anytime you shoot a building and don't hold the camera perfectly perpendicular to the building's surface, the vertical... Read More »

How to insert a work sheet to the right hand side of the last work sheet in the Excel file?

You did not specify which version of MS-Excel you are using, for there is a difference in the steps involved.In 2007, just use the special "Insert Worksheet" tab located on the far right of all of ... Read More »