Charles Goebel
Charles Goebel
Charles holds a Master’s degree in Physics Engineering (optics and photonics specialization), has been teaching physics at school for almost 15 years and recently has started teaching a course on optics at a local university. Our irreplaceable website expert.

Latest articles

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How to Use a Scope?
A scope is an essential part of rifles. But not all rifles come with one. Most rifles have inbuilt provision for attaching a scope to them, while others would require some improvisation. Choosing the appropriate scope for your rifle is something that must be looked into. In this article, we will provide you with ...
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6 Best Monoculars for Backpacking – An Easy and Portable Way to See More
Ever wanted a telescope that fits in your pocket so that you can stargaze or get in touch with nature? Look no further. With a lightweight and compact monoculars, you will be able to watch rare species of birds, go hunting, or even get the most scenic views when on an outdoor trip. If you're looking for the best ...
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What Do Numbers on Binoculars Mean?
What do numbers on binoculars mean? This is a question asked by most first-time shoppers when they try to read the specifications of the devices. There are usually a bunch of numbers in the specs sheet, and manufacturers don’t provide any meaningful descriptions hence the confusion. This is also quite common where ...
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6 Best Barlow Lenses – Extend the Reach of Your Telescope!
Do you think that the best Barlow lenses are easy to choose and buy? They are apparently not as a lot of people can’t seem to buy lenses they want to use for the long term. Instead, they are back in the market looking for other options as soon as their purchase arrives, and they realize it’s not what they want. ...
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How to Aim with Iron Sights
Learning to aim a gun at the target is essential for anyone who owns it, either for hunting or range shooting. Iron sight is a built-in device that is used to assist you in aligning with specific targets. It can be used in firearms, crossbows, or telescopes. In this article, we will delve into the details of how to ...
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7 Best Travel Telescopes to Watch the Sky from Any Place You Want
If you are an outdoorsy person or an aspiring astronomer, a telescope is a must-have. There are tons of high-end stationery telescopes on the market, but what if you want to stargaze on your camping trip? Thanks to technological advancements, there are portable telescopes that are superbly compact yet offer ...
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Where Are Vortex Binoculars Made: Secrets Revealed
Few items are more difficult to locate in today's world economy than the factories that produce anything as sophisticated as a high-end pair of optics. You might assume it's as easy as locating a single manufacturing plant or testing the "Made In" stamp. The reality is that testing the stamp just gets you so far – ...
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6 Best Zoom Binoculars for Wildlife Watching, Sports, and More
It might be scary to find out that not all zoom binoculars are worth the money you pay for them. However, don’t let this realization hit you after you’ve already made the purchase. Instead, you can pick up a few bits of information here that should help you get the best zoom binoculars out of a myriad of options. ...
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Inverted vs Upright Microscope: the Difference Explained
In this guide, we have explained the differences between an inverted vs upright microscope, including their individual pros and cons.  We have reviewed their main parts as well as how each microscope works. To compare the two types of ...
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15 Best Bow Sights – High Technology at Hand
Bows are no longer seen as a primitive weapon. Today's bow is a high technology weapon that can be used for sports or hunting. And the sight is one of its most essential components. It can help you view targets easily and clearly, ensuring you get accurate shots. The great advantage in the use of optical sights is ...