Euler's Spinning Disk オイラー スピニングディスク 並行輸入品

子供が動画を見て欲しがり、お小遣いで買いました。高いかな、と思ったけど、正規品でないとうまく回らないみたいなのでこちらにしました。数日間は、何度も回して楽しんでいたけど、飽きるのも早いのかな。でも、子供が満足していたので良かったです。

非常に動き方が面白いです。止まりそうになってからの粘りがスゴイですね。

回し方に少しコツが入りますが、結構気に入りました。退屈な時や気分転換したいときにクルクル回して遊んでいます。回転が止まりそうなところから徐々に回転が加速して、思っていた以上に回り続けます。

以前,動画を見て気になっていました。お値段が高いので迷いましたが,思い切って購入しました。 回転が始まると,きれいに回りますし,倒れそうになってからの「粘り」がすごいです。 思わず「がんばれ！」と応援したくなります。 いよいよ倒れそうになってからの「音」が気持ちよいです。 オプションのホログラムがついていますが,ホログラムをつけるとうまく回らないし,思ったほどきれいでもありません。はだかで回したほうが,ずっと見ていられます。 私みたいに「こういうのが好きな人」にはたまりませんが,妻のように「興味ない人」には,面白さが伝わらないかも知れません。

見ているだけで時間が過ぎるのを忘れる。 幼少期に駒の回転等を眺めていたあの頃に戻れます。 購入後半年程度でサビ（？）の様なものがつき回転のしかたが悪くなりました。

単純な商品だけど、奥が深い。値段は高価だけど私にはピッタリの商品です。 仕事や人間関係で何も考えたくない時にディスクを回してボーっとしています。 何も考えない時間って大切ですね。 この商品を開発した人はもっと考えろって言いたそうだけどね。

種も仕掛けもない凹面鏡の台とずっしりと重たい金属円板があるだけです。 このいつかは見かけたことがある２つの物が出会い、スケートリンクよろしく凹面鏡の上で金属円板がフィギアースケート選手のごとく スピンを始めるとなんと他に何も力を加えなくともクルクルと回転をし続け、それが何時までもあり得ない長さ（何年も生きていたがこんなに長く回ることは想像だにできなかった。）あきれるくらい長い時間回り続けます。 しかも止まる寸前には超回転スピードになり、回転音がすごい唸り音に変化していきます。 （中性子星が最後にはｘ線を発生するパルサーになるイメージにも思えます。） こんな運動が有り得るんだと驚きを間近に体験するために是非入手してみて下さい。

長く回り続けるが、止まる謎は解明されてないとかで2000年代に一時話題になった。 空気の粘性摩擦派と転がり摩擦派とで論争になったらしい代物。 尚最後の一瞬、止まる際の謎はまだ解明されていない。 と、昔物理教師が熱く語ってたな。

I bought this to entertain and educate our grandsons. I think it will intrigue them for a few runs. After that it will be more of an occasional novelty item, but I expected that. It's fascinating to watch, particularly as it gets lower and lower. I was impressed how long it kept going, as the sound it makes keeps going up in pitch.

Very well built and it is amazingly beautiful. Looks good on the table and it really spins for a long time!

Who says anyone is too old to enjoy cool stuff like this?! I can't even believe people gave this any less than five stars! Not sure what they were expecting, and apparently some people were spinning the box it came in, I guess, or trying to spin the mirror on the disk maybe, or spinning themselves instead of the disk, ahahaha, who knows, but if you like absolutely cool gadgets that serve no other purpose than being COOL GADGETS then you will LOVE this thing! Here's a tip so to not be disappointed, thinking this was supposed to be Thor's Hammer that will make you fly or something -- just go to YouTube, look it up, watch the video, and if you say "how dumb and dull" then don't buy it -- and certainly don't buy it and then say how dull or dumb you think it is! If, on the other hand, you said, "Oh, yeah, totally cool" then TOTALLY BUY IT. It does EXACTLY what it does in the video -- put the heavy disk on the mirror, give it any kind of spin, and be amazed as, just when you think it's going to stop spinning......it doesn't stop spinning! Get even more amazed at the hypnotically cool display of colors (which can be changed in pattern, by swapping out the magnetic covering pieces you can put on the disk, and can be highlighted by shining a flashlight on it, especially in a darkened room) and then be amazed again when it still just WON'T QUIT!!! Amazement ensues even more as it finally begins the wind down stage, seeming to spin crazy fast, and faster and faster, and making an increasingly louder sound as if building up to a detonation and then amazement flies off the charts as it reaches a crescendo and suddenly, BAM, silence! You don't even have to be smart to realize you just saw something scientific and be all like, WOW, COOL!!!! Yes, I know, I just described the video, right??? Because that's what it DOES!!! So, you like the video, you say, oh I definitely want to try that, because that just can't be real, and you buy it, you spin the disk, you get the show, and you love this thing! Even more cool is every new person can't believe it -- ask anyone how long they think it will spin and nobody gets that this thing just spins SOOOOOO long and, yeah, tons of fun. Never has disappointed anyone, and it's so unassuming, just sitting there.....the curious will ask, "Hey, so what is that," and let the magic begin. I think it's so awesome when we can see something that isn't easily explained by what we normally see -- we know a spun coin will soon quit, so we don't expect this big coin looking disk to go on and on and on! Makes people feel young again, to have that taste of mystery. My office has plenty of these kinds of gadgets, but this one is the coolest and clients are always entertained, as well as my staff, haha, and all in all people love my office, which is great because you want people laid back and happy when talking to the boss, and it just makes for a relaxed and interesting space. Office gadgets rule! So, if you don't like cool scientific toys that leave people saying, "Wow, I can't believe I just saw that!" then don't buy it. But if you like those kinds of things, then, yes you'll love it -- kids and adults alike are amazed to watch it, and hey, we can all use a bit of wonder in our world, right? This is a purchase you can literally decide before buying, simply by watching it on YouTube. That's the exact product and performance you are getting, and you either like that kind of thing, or you don't, so it's a really simple purchase to make....or not! I found it more cool to own it, than just to watch the video, but then again I like stuff like this, and frankly would like to buy a lot of the other things in related videos. In this age of tech wonder, sometimes the simple old wonders are much more entertaining. As for being a "toy" I would agree with others who have said it's not really a toy, in the sense of a truck or doll or something to "play" with, but more like a science demonstration that passes as a magical trick, since it's so unusual to see, and requires no knowledge (or dull explanation, frankly) of what's happening to be impressed by what takes place. It's not something likely to entertain a child for hours on end, but such is not the point. Besides, the mirror is glass, obviously, and a wrong toss of the coin would shatter it, so not something really to give to a child and say, "Here, have fun!!!" I will say it keeps people of all ages stumped, and they always want to see it again, so it has good use as a cool gadget left out so that you can show it folks, or let them give it a try. It's something for people to experience and enjoy and if that's not worth the small asking price of twenty bucks, then people just aren't making room in life for things that have no purpose but to be awesome, which is a purpose unto itself, of tremendous value, such as having your kids, and yourself, lose the shoes and socks and step in paint and then paint with your feet, making a family footsy collage, and then just making a (controlled, ahaha" mess, for the sheer fact that it can be done, and feels cool. We have lost touch with sensory experience, much to our detriment! So put down the smart phone and tablet and enjoy this actual physical object. Definitely worth the small price of admission for this show! Watch video. Like. Buy. Be happy! Share the joy! I HIGHLY RECOMMEND!!!!

Un producto excelente de buena calidad funciona a la perfección y llegó a tiempo vale la pena tener uno ya sea para laboratorio escolar así como para el hogar donde se puede observar la ley de la conservación de la energía

The grandchildren love this.