Optics

Microscopes come with a variety of magnification abilities, allowing the user to peer into miniscule worlds that may be invisible to the naked eye. "Magnification" refers to enlarging the image of...

Microscopes are imaging aids that allow us to see detailed pictures of objects too small to be seen with the naked eye. These scientific instruments come in different power magnifications. Without...

Words in the English language are often confused with each other, or incorrectly used interchangeably. "Magnification" and "resolution" are two words that really mean something quite different.

Many people end up purchasing expensive telescopes in order to view the stars, completely unaware that there's a vast array of binoculars that can be just as adequately used to stargaze. If you...

An optical microscope relies on light in order to produce an image, so the amount of light has great influence on the image produced. Two terms used to describe the way this image is viewed are...

This article provides an overview of microscopic resolution, from the definition of resolution to recent advances within the field.

Microscopes are invaluable tools for biologists, engineers, doctors and other science professionals. Of these vital science tools, the stereo microscope using specially crafted series of lenses,...

Barlow eyepieces for telescopes are sold in different magnification factors. Find out about a Barlow eyepiece for a telescope in this free video on home astronomy from a telescope salesperson.

When buying a telescope, be wary of inflated magnification claims and wobbly tripods. Shop wisely for telescopes with the buying tips in this free video on home astronomy from a telescope salesperson.

When buying a telescope, use the focal length and focal ratio to determine the magnification of a telescope. Choose a focal ratio for a telescopes based on the tips in this free video on home...

Telescopes can feature different eyepieces that change magnification and viewing options during telescope use. Learn different eyepieces for telescope viewing from an observatory director in this...

There are generally two types of microscopes: stereo and compound microscopes. Stereo microscopes are low-powered in comparison and can enhance objects 10-40X. It is a great microscope for looking...

Choosing the right telescope depends on your personal needs and interests. What may be ideal for one person isn't necessarily right for you. Before you begin your search for the ideal telescope it...

Mil dot rifle scopes are accurate tools for measuring distance without the need for lasers, multiple measurements or complicated math. To calculate distance using mil dot rifle scopes, you just...

The best way to shop for binoculars is by trying out as many pairs as possible at your local gun shops and sporting goods stores. This will give you an idea of the difference in weight, image...

A rifle scope is far superior to the iron sights that come on a rifle for shooting at any appreciable distance. The magnification power of the scope determines how far out you can accurately sight...

Rifle scopes are available with a variety of options, including different magnification, reticle type and resolution. Choose a rifle scope wisely, and your junior hunter will get much more out of...

Microscopes are diagnostic and investigative tools used most often in classrooms and laboratories. It is easy to buy a microscope, as more and more companies are offering reasonably prices ones...

Get ready for deer hunting season by buying the right rifle scope. You can hunt without one, but you'll want to know for certain what it is you are shooting at. Get that young buck in sight and...

Compound microscopes are much more powerful than traditional microscopes. Where traditional microscopes are able to magnify objects between 100 and 300 times their actual sizes, compound...

Telescope eyepieces form the magnified images that you see when you look through the telescope's optical tube. An eyepiece consists of lens components in a moisture- and dust-resistant housing....

Photographers and architects have used rangefinders with manual focus knobs for decades due to a lack of options. Camera companies and other rangefinder producers have opened the door for digital...

A rangefinder is a device that helps measure distances for construction workers, photographers and outdoor enthusiasts. There are dozens of rangefinders available on the market today, from simple...

You determine the magnification power of a telescope from the focal length of the eyepiece and the focal length of the telescope. The eyepiece in the Sky-Watcher SK MAK series is either 10 mm or...

The area in which you can see through your telescope is known as the true field of view. Your telescope’s field of view is determined by the design of the eyepiece. Here is how to find the field...

The area that you can see through your telescope is known as the true or actual field of view. The field of view of your telescope is determined by the design of the eyepiece of the telescope....

The area that you can see through your telescope is known as the true field of view or the actual field of view. The field of view of your telescope is determined by the design of the eyepiece of...

The area that you can see through your telescope is known as the true field of view or the actual field of view. The field of view of your telescope is determined by the design of the eyepiece of...

Telescopes have varied eyepieces. A Sky-Watcher SK1206AZ3 Short Tube Refractor Telescope may incorporate different types of eyepieces. The eyepiece is a critical component of a telescope as it...

A telescope’s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a focal length, expressed in millimeters, or “mm.” The smaller the focal length, the higher the...

A telescope’s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a focal length, expressed in millimeters, or “mm.” The smaller the focal length, the higher the...

A telescope’s eyepiece magnifies the light gathered by the optical tube. Each eyepiece has a focal length, expressed in millimeters, or “mm.” The smaller the focal length, the higher the...