Snow Crystals
SKU: 31182279632

Snow Crystals

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Description

Snow CrystalsOffers valuable material not only to students of crystallography but also to those of the arts. The New York Times Did you ever try to photograph a snowflake? The procedure is very tricky. The work must be done rapidly in extreme cold, for even body heat can melt a rare specimen that has been painstakingly mounted. The lighting must be just right to reveal all the nuances of design without producing heat. But the results can be rewarding, as the work

Offers valuable material not only to students of crystallography but also to those of the arts. -- The New York Times
Did you ever try to photograph a snowflake? The procedure is very tricky. The work must be done rapidly in extreme cold, for even body heat can melt a rare specimen that has been painstakingly mounted. The lighting must be just right to reveal all the nuances of design without producing heat. But the results can be rewarding, as the work of W. A. Bentley proved.
For almost half a century, Bentley caught and photographed thousands of snowflakes in his workshop at Jericho, Vermont, and made available to scientists and art instructors samples of his remarkable work. In 1931, the American Meteorological Society gathered together the best of these photomicrographs, plus some slides of frost, glaze, dew on vegetation and spider webs, sleet, and soft hail, and a text by W. J. Humphreys, and had them published. That book is here reproduced, unaltered, and unabridged. Over 2,000 beautiful crystals on these pages reveal the wonder of nature's diversity in uniformity; no two are alike, yet all are based on a common hexagon.
The introductory text covers the technique of photographing snow crystals, classification, the fundamentals of crystallography, and markings. There are also brief discussions of the nature and cause of ice flowers, windowpane frost, dew, rime, sleet, and graupel.
The book is of great value both to students of ice forms and for textile and other designers who can use the natural designs of these snow crystals in their work. Every photograph is royalty-free; you may use up to 10 without fees, permission, or acknowledgement.
A most unusual and very readable book. -- Nature

Binding Type: Paperback
Publisher: Dover Publications
Published: 06/01/1962
ISBN: 9780486202877
Pages: 224
Weight: 1.45lbs
Size: 10.30h x 8.08w x 0.47d

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SKU: 31182279632

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4.2 ★★★★★
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Maverick
West Palm Beach, US
★★★★★ 5
Absolutely would buy again
Color: Orange
I love this, my pup loves this. Strong, sturdy. Shakes all over the place. Pup loves to chew on it, I think the vibration comforts her gums from teething. Perfect size You must take the outer skin off and pop open the white power button to charge it. Total fun!
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Reviewed in the United States on March 22, 2026
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Thomas Latham
Pawtucket, US
★★★★★ 4
Rubber blue cover won't come off.
Color: Orange
If you want to keep the blue cover on that your dog chews off every other ball that is similar, get this one. Most dogs will not chew it off. It stretches when the chew on it so it can't be chewed or stretched off the ball. I've got a blind dog and she will kick it around for an hour at a time. It keeps her active and having fun.
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Reviewed in the United States on November 8, 2025
T
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Travis
San Leandro, US
★★★★★ 3
Nice, but...
Color: Orange
It's a good idea & keeps my 1yr old Staffy/Pit occupied, BUT... The rubber around the ball is either too easy to chew through or my pup is just an aggressive chewer. Either way, it's a plus that it does come with an additional rubber, but it would be nice to also be able to buy additional ones vs having to buy the whole toy again & again! Oh, & if you think about letting them play with it without the rubber please be on the lookout for the rubber covering where you would charge it because my pup managed to locate & destroy that cover piece as well haha!
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Reviewed in the United States on August 27, 2025
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Janice
Los Angeles, US
★★★★★ 5
Good quality
Color: Orange
This interactive dog ball has been a fun and engaging toy for my dog. It entertained much longer than regular toys.
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Reviewed in the United States on April 22, 2026
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Verified Purchase
Drew K.
Grantham, US
★★★★★ 5
Entertains my husky!
After some research, I decided on this interactive toy for my young husky. I chose it over others because I liked that it was wrapped in a silicone cover so it wouldn't be as hard on her teeth, or my floors. It also seems to have helped with durability. She's never had this sort of automated toy before to engage with and it surprised her at first, but then she really got into it: pawing and nosing and sometimes howling at it. I was worried it would drive her and/or me crazy, but so far so good. She will play with it for a good 10 minutes at a time and it seems to provide some good mental stimulation since it rolls and spins unpredictably. It is easy to charge and was ready to use right out of the box. It has proved durable in the first week surviving my crazy pup and multiple trips down the stairs. I am also happy to report that it has worked pretty well on the carpet/rug areas of the home. It should work pretty well unless you have a very thick shag carpet. We'll see how long it lasts, but highly recommend so far.
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Reviewed in the United States on July 1, 2025

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