SKU: 55015319621

Das Kopernikus-Planetarium

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Description

Das Kopernikus-PlanetariumDas weltweit erste mechanische Planetenmodell als Kartonbausatz: Es zeigt die Bewegungen der inneren Planeten Merkur und Venus sowie des Mondes und der Erde, wobei diese sich um ihre schrg stehende und immer gleich ausgerichtete Achse dreht. Eine Kurbelumdrehung an dem Getriebe aus Gummiriemen und Rillenrdern entspricht dem Ablauf einer Woche. Dabei ruft es sechs verschiedene, gleichzeitige Bewegungen hervor, die zueinander im angenherten Verhltnis

Das weltweit erste mechanische Planetenmodell als Kartonbausatz: Es zeigt die Bewegungen der inneren Planeten Merkur und Venus sowie des Mondes und der Erde, wobei diese sich um ihre schräg stehende und immer gleich ausgerichtete Achse dreht. Eine Kurbelumdrehung an dem Getriebe aus Gummiriemen und Rillenrädern entspricht dem Ablauf einer Woche. Dabei ruft es sechs verschiedene, gleichzeitige Bewegungen hervor, die zueinander im angenäherten Verhältnis der tatsächlichen Umlaufzeiten stehen. Viele himmlische Vorgänge lassen sich so vom kopernikanischen (heliozentrischen) Standpunkt aus erklären, z.B. das Wandern der Sonne durch den Tierkreis oder die Konjunktionen von Merkur und Venus untereinander und mit der Sonne. Die Sonne mit heller LED-Beleuchtung zeigt im dunklen Raum nicht nur den Wechsel der Jahreszeiten, sondern auch das Entstehen der Mondphasen, der Finsternisse und die Sichelphasen der Venus.

EAN: 4260568972294
Farbverschnitt: Generell werden die Bücher ohne Farbverschnitt geliefert, auch wenn die Abbildungen einen Farbverschnitt zeigen.
Erscheinungsjahr: 2019
Produktform: NonBook
Autoren: Hünig, Klaus
Keyword: Planetarium; Planetenmodell; Kurbel-Planetarium; Kartonbausatz
Fachschema: Mechanik~Non Books / Spielzeug~Technologie~Sonnensystem
Fachkategorie: Astronomie und Raumfahrt: Sachbuch~Technologie, allgemein, Sonnensystem: Sonne und Planeten
Text Sprache: ger
Verlag: AstroMedia GmbH
Länge: 331 mm
Breite: 226 mm
Höhe: 74 mm
Gewicht: 756 gr
Genre: Spiele, PBS
Herkunftsland: DEUTSCHLAND (DE)
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SKU: 55015319621

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Dianna H
Fort Morgan, US
★★★★★ 5
Not Scented, but Dog Approved
Size: 2-pack, Style: Duo
They don't smell like peanut butter or bacon. But our dogs still love them.
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Reviewed in the United States on August 31, 2025
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waragon
Battle Creek, US
★★★★★ 4
If they squeaked, they would be the perfect ball!
Size: 2-pack, Style: Duo
I bought our 15 month old Coton several Chuck-It toys on an Amazon deal. He is incredibly playful, mischievous, and ball/toy obsessed, especially for anything that makes noise. He can also be very destructive so I love how durable most of their products are - they’re among our longest lasting toys and worth every penny. We have yet to take them to the dog park, but they’re a perfect size for sharing in plat time. And they are keeping him busy at home - that’s a good thing. The scent is subtle but strong enough for him I guess because he loves gnawing on them. If they had squeakers, they would be absolutely perfect. Hopefully Chuck-It will see an opportunity for that down the road!
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Reviewed in the United States on May 28, 2026
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Reepeat
Carnegie, US
★★★★★ 5
Most durable fetch balls I know of.
Size: 2-pack, Style: Duo
These balls are the biggest balls of them all. Well, not the biggest, but the best. Every other ball she would chew up in short order and I'd be throwing her a floppy piece of rubber. She just wants to fetch, but if it's not bouncing, she can't catch it on the bounce. Got these balls in July and no damage to them. I just ordered another pair, but only because the other two somehow got stuck up in trees. We have some very old and very large oak trees so not so easy to retrieve. Hope they somehow drop someday. But in the meantime, Lassie will be happy with her new ones. Very highly recommended!
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Reviewed in the United States on October 28, 2025
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Blonde Aggie
Alexandria, US
★★★★★ 5
Works great for scent work! Bounce is great for air retrieve!
Size: 2-pack, Style: Duo, Size: 2-pack, Style: Duo
My dog doesn’t know he loves them yet but I do! They are a little softer so when we do air retrieve, I don’t have to worry as much about his teeth! I’m hoping he will learn to find them by smell vs sight. We often play in the evenings and he tends to loose his ball. Love chuck it! Right now, we have about 10 chuck it balls! The tennis balls don’t work for air retrieve! Chuckit does!!! Love the thrower too! Saves my arm!!!!
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Reviewed in the United States on August 6, 2025
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None of your business
Bozeman, US
★★★★★ 3
I guess the smell is offputting
Size: 2-pack, Style: Duo
My dog loves chocolate stuff. But for some reason, wasn’t a huge fan of these balls. She played with them a little bit, but they’re not her favorite.
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Reviewed in the United States on December 30, 2025

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