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How to choose a good microscope for a child

In this article, we will learn how to choose a good microscope for a child, and the key word here is GOOD . All parents who one way or another chose a microscope for the child must have read different reviews. The fact is that toy microscopes , which are sold in toy stores, even quite expensive (about 5000 rubles), do not justify the name "microscope", unfortunately, not to mention cheaper models. If you manage to see something there (in some models you can’t see anything at all), the picture will be such that the child is unlikely to be interested in working with such a microscope for longer than several days. To know more, check out: best microscope for kids

 

Meanwhile, there are good microscopes . But be prepared: of course, they cost more than gaming. Although some of the models are inexpensive, they are quite comparable in price to "tricked out" toys. These are school and professional microscopes .

 

If you want to buy a toy for your child, choose a good microscope or buy something else, for example, a high-quality magnifier. It makes sense to buy a microscope only if the child is seriously studying biology and chemistry , plans to take them to the exam and the exam, chooses biology as a specialty, and is going to the medical faculty. Then, indeed, a good microscope at home is a vital thing, and the rather high cost of collecting the entire set of everything necessary for research under the microscope is more than justified.

 

Magnification microscope

 

The magnification at the microscope can be optical and digital . Optical is what you need to pay attention to. Digital zoom is just a zoom, you will simply be enlarged by the size, but you will not see any new details there. For serious study, it is highly advisable to have a microscope with an increase of 1000 times or more. There are models available for purchase at home, with an optical zoom of 2000 times.

 

Diopter adjustment for those with low vision

 

If the observer has poor eyesight, it is advisable to pay attention to the diopter adjustment. The microscope can adjust diopters for vision from +5 to -5. It is much more convenient to look through the eyepiece and see than to look through the eyepiece through glasses.

 

 

Coarse and fine tuning

 

Microscopes come in coarse and fine-tuned. For some, the setting is only rough. It is clear that it is better to look for a model with fine-tuning (rough, of course, there is, just fine may not be).

 

What is the difference if the description of the microscopes is similar, but the price is different?

 

Does it make sense to buy a microscope more expensive, what is the fundamental difference between microscopes for 12 and 30 thousand , because by description they are, on the whole, very similar? The answer is simple: yes, it makes sense to buy more.

 

Those microscopes that are priced at 12-13 thousand have lower quality lenses in comparison with, for example, Altos BIO, and they are monocular, without the ability to adjust diopters. If a mono- or binocular (looking with one or two eyes, binocular with two eyes is more convenient, you get tired less), you can still survive and take a monocular, then the fact that optics in less expensive models is worse, immediately suggests that it’s better not to save on this thing, as much as possible for you.

Backlight

 

The microscope may have a halogen or LED backlight: which is better?

 

LED backlighting is a LED, it will burn longer and will not heat up much, and the halogen heats up a bit more and gives a yellowish color. The LED gives white light, which, of course, is preferable. Many models of the same microscope come with either one or another backlight of your choice, and the LED option costs a little more. The difference is not significant, so it is better to choose LED.

How to choose lenses for sunglasses

 

A pair of good quality sunglasses protects the eyes not only from the glare but also from the UV radiation. The bright light reduces the clarity of vision, tires the eyes and can cause headaches. UV sunlight, which in large quantities can be harmful to many forms of life, is divided into three parts: UV-A, UV-B and UV-C. Like visible light, UV-A and UV-B penetrate the protective atmosphere surrounding the earth and reach the ground. UV-C which contains a particularly high amount of energy and therefore would be extremely harmful, never reaches the surface of the earth. UV-B, with a wavelength of about 400nm, contains a high amount of energy and can cause sunburn. Therefore, sunlight that burns the skin can also injure the various layers of tissue in the eye. UV-A is absorbed by the eyes, but no harmful effects have been reported so far.

 

Our essential ally in protecting the health of our eyes are sunglasses and especially sunglasses lenses. Look for glasses whose lenses absorb 98% - 100% of the harmful radiation and are labeled "UV 400".

The types of lenses

 

Polarized lenses. Polarized lenses are based on the principle of polarization of light. They have very good UV absorption, neutralize the glare of the light and provide a relaxing look. If you love sea and snow sports or drive frequently, choose the best sunglasses for driving.

  • Mirror / mirror lenses. Exterior mirror-coated lenses reflect much of the radiation, significantly reducing the amount of light reaching the eye.
  • Blue-blockers. These lenses absorb the light in blue-violet light, that is, more than the spectrum of ultraviolet rays, and thus protect them better than just absorbent sunglasses. If you prefer sailing, skiing or racing, you are a pilot or hunter, prefer them.
  • Gradient darkness / degrade lenses. The lenses have a dark upper section that gradually decreases, resulting in an open lower section. They are ideal for everyday and demanding driving.
  • Photochromic lenses. These are lenses that increase their darkness, depending on the amount of sunlight they receive. So you can have dark sunglasses under the bright sun and white, clear glasses when you are moving indoors. If everyday life dictates frequent indoor and outdoor changes, they are ideal!

 

The material of the lenses

Sunglasses are made of crystal, organic matter or polycarbonate. Because crystals are light weight, limited in color and can break, they are now used less frequently by sunglasses manufacturers. In contrast to the unlimited paint and shade capabilities, low weight and safety have made organic sunglasses a top choice for manufacturers. For children as well as those who strain their glasses, organic lenses with high resistance to breakage or polycarbonate that are 50 times more resistant to shock and surface abrasion than organic lenses should be selected.

The color of the lenses

You can choose any color you prefer for your glasses lenses. Your choice does not affect the effectiveness of lens protection at all. In general, gray and brown are the most popular, as they are less likely to change the colors of the environment. Coffee additionally increases the brightness. For some special uses, there are colors that will be preferred over others, such as yellow for shooting, hunting and night driving, as it increases the contrast of colors.