Levenhuk’s informative book, “Invisible World’’ (read an excerpt), will help young scientists learn everything they want to know about microscopes and microscopic observations. They will start by learning the history of the microscope, its construction, and basic principles of working with this optical instrument. The main part of the book is devoted to microorganisms and a variety of structures that can be seen under a microscope. Cell structure, amazing bacteria, invisible E. coli bacteria; life in a drop of water – these are only a few things this encyclopedic book tells us about.
“Invisible World’’ has a convenient square format and is written especially for children in a simple, easy-to-understand language. Large colorful images demonstrate all that is described in the book. The most interesting information about the microworld is highlighted to be easily memorized. The book contains descriptions of simple experiments that can be performed at home under adult supervision.
The book is written for children over 6 years old.
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Extensive Manufacturer Warranty
All of our manufacturers offer very generous warranty coverage of the products sold through our store. Based upon which brand is purchased that item is also covered from defects in workmanship and quality.
Explore FirstLight Branded Products: Limited USA One Year Warranty.
Explore Scientific Branded Telescopes: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
Explore Scientific Branded Eyepieces: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
Explore Scientific Branded Non-Electronic Telescope Accessories: Limited* USA One Year Warranty, Extendable to Unlimited Lifetime Warranty
Levenhuk: All Levenhuk telescopes, microscopes, binoculars and other optical products, except for accessories, carry a lifetime warranty against defects in materials and workmanship; all accessories have a 6-month warranty. This warranty does not cover consumable parts, such as bulbs (incandescent, LED, halogen, energy-saving and other types of bulbs), batteries (rechargeable and non-rechargeable), electrical consumables, etc.
Vixen Optics:Every Vixen telescope, astronomical binocular, and mount is warranted by Vixen Optics to be free of defects in materials and workmanship for a period of 5 years from the date of original purchase in the U.S.A. and Canada. Five year warranty covers all non-electrical/mechanical parts. Electrical parts are warranted for 1 year from date of purchase.