SKU: 23757969121

Der Nitinol-Motor

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Description

Der Nitinol-MotorWir freuen uns, Ihnen den weltweit ersten in Serie produzierten Nitinol Motor dieser Bauweise anbieten zu knnen. Zeigen Sie ihn einem Menschen, der sich fr Technik oder alternative Energiequellen interessiert: Sie knnen sicher sein, er wird staunen, nicht zuletzt ber den gnstigen Preis. Es gibt tatschlich weder in Europa noch irgendwo sonst auf der Welt etwas Vergleichbares. Das Herz dieser sehr ungewhnlichen Wrmekraftmaschine ist ein Ring aus

Wir freuen uns, Ihnen den weltweit ersten in Serie produzierten Nitinol-Motor dieser Bauweise anbieten zu können. Zeigen Sie ihn einem Menschen, der sich für Technik oder alternative Energiequellen interessiert: Sie können sicher sein, er wird staunen, nicht zuletzt über den günstigen Preis. Es gibt tatsächlich weder in Europa noch irgendwo sonst auf der Welt etwas Vergleichbares. Das Herz dieser sehr ungewöhnlichen Wärmekraftmaschine ist ein Ring aus haarfeinem Nitinoldraht (0,3 mm). Etwas warmes Wasser genügt ihm, dann beginnt der Nitinol-Motor, sich unermüdlich zu drehen und zu stampfen. Nitinol, eine Legierung aus Nickel und Titan, hat höchst ungewöhnliche Eigenschaften: Im warmen Zustand ist es steif und elastisch wie Federstahl, unterhalb einer bestimmten Temperatur aber wird es biegsam wie Weicheisen. Das kann man beliebig oft wiederholen, immer nimmt Nitinol bei Erwärmung wieder die alte Form an, und zwar plötzlich und mit erstaunlicher Kraftentfaltung. Die Sprungtemperatur unseres Nitinol-Drahtrings liegt bei 45°. Und so funktioniert der Nitinol-Motor: An der Luft ist der Draht weich; wo er in das 50° warme Wasser eintaucht, wird er plötzlich steif und gerade. Weil ihn aber dort das Rillenrad in eine Rundung zwingt, muss er nach oben ausweichen. Dabei zieht er ein neues Stück Draht hinter sich her ins warme Wasser, worauf das Ganze von vorne beginnt. Das Grundprinzip, 1985 von Frederic Wang erfunden, ist schon bei geringen Temperaturunterschieden wirksam und hat ein großes Zukunftspotential für die alternative Energiegewinnung.

EAN: 4260568974632
Farbverschnitt: Generell werden die Bücher ohne Farbverschnitt geliefert, auch wenn die Abbildungen einen Farbverschnitt zeigen.
Erscheinungsjahr: 2017
Produktform: NonBook
Autoren: Hünig, Klaus
Keyword: Wärmekraftmaschine; Kartonbausatz; Heißluftmotor
Fachschema: Mechanik~Non Books / Spielzeug~Technologie~Dynamik (physikalisch) / Thermodynamik~Thermodynamik~Wärmelehre / Thermodynamik~Antrieb (technisch)
Fachkategorie: Thermodynamik und Wärme~Technologie, allgemein, Motoren und Antriebstechnik
Text Sprache: ger
Verlag: AstroMedia GmbH
Länge: 301 mm
Breite: 215 mm
Höhe: 15 mm
Gewicht: 218 gr
Genre: Spiele, PBS
Herkunftsland: DEUTSCHLAND (DE)
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SKU: 23757969121

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4.4 ★★★★★
Based on 26 reviews
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KB
Boise, US
★★★★★ 5
A Multi-faceted, beautiful book for babies through primary grades.
Format: Hardcover
Our second generation is now loving this beautiful, clever, playful book. Although there are no words, the story line is a delight. A watercolored village develops one page to the next starting with 0 and ending with 12. The pictures add one item in each category for each new number, building on the previous scene. Readers can find and count buildings, children, adults, pine trees, cherry trees, and an assortment of animals. In addition, in a lovely subtle manner, the four northern hemisphere seasons pass from January to December. The details of adult and child activities through time and seasons can be noted. Anno's creativity in this genre is unsurpassed. For my children, and now for my grandson, this book evokes fascination on several levels both aesthetic and intellectual. Start using it as a baby word book, and it will last as a joy throughout early childhood. Not every baby book must be a board book. Teaching children to turn pages gently is easy to do and adds to the amazing, shared experience.
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Reviewed in the United States on February 22, 2015
C
Verified Purchase
Chopper
Dallas, US
★★★★★ 5
Gorgeous book!
Format: Hardcover
Read this over and over with my own children and they loved it. Buying for friends' children/grandchildren and they are loving it, too. Timeless, lots to capture kids' interest and counting. The suggested age is 3 and up, but we used it earlier than 3 years of age; it depends on the child. We're buying them now for newborns figuring they'll "grow into it."
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Reviewed in the United States on September 16, 2021
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Verified Purchase
Dan
Fort Morgan, US
★★★★★ 4
A truly original concept picture book. Unlike most counting ...
Format: Hardcover
A truly original concept picture book. Unlike most counting concept books that only show one item type (like 2 balls on the page about 2) this book has many items to count on each number page (3 trees, 3 trains, 3 cows, etc, on the pages about the number 3). You have to search around to find each of the items because the author moves the items around each time. :) Yes, it's not as flashy, but it's got what really counts!
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Reviewed in the United States on December 3, 2016
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Elisa's Mom
Pawtucket, US
★★★★★ 5
Excellent early math book
Format: Paperback
I found this book on a recommended Early Math reading list posted on the PBS Parents website. Since there are no words in this book, there is nothing to actually read to your child. But it is likely one of the longest 12 page books I've read. And it is by far the most significant number book my 3 year old has read. Anno uses a town to depict and define numbers 0-12, the seasons, and the months of the year. The seasons and months are recognizeable, but not the focus like the numbers are. For the number 0, you see a blank landscape with a small river. When the child turns the page, he sees a large number 1 on the right side of the book and in the landscape one lone building, one tree, one sun, one snowman.... There is also a set of blocks on the left side of the book, with one block colored in. Thus, the child can see the number 1 represented as a numeral, as a block (of a set of 10), and as an object (one building, one tree, one person). As you turn the pages and the numbers increase, a village forms. The final page is the number 12 -- a full village at Christmas time, complete with 12 reindeer in the sky. As a parent, I enjoy having my daughter "read" to me. But I am most amazed by how the book has helped her to grasp the concept of numbers. As she explained, "0, Mommy. Because there's nothing there."
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Reviewed in the United States on March 1, 2009
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Tenormary
Phoenix, US
★★★★★ 5
Great way to remove dry skin while not being abrasive
Style: Bath & Body
One side of the scrubber is a softer cloth, the other is a more abrasive cloth. There is a sponge divider between the two. This is great to use during the dry days of winter when my skin becomes dryer and more scaly. The soft side is for my face, of course. The ribbon band across the back lets me slide my hand in and get a bit more leverage and to hold on to the scrubber. Much kinder to my skin than a loofah. I wash the Scrubber with the towels so it is always clean.
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Reviewed in the United States on January 15, 2026

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