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地球ゴマ 教育玩具 SGジャイロクラッシック (RED)
 
        

  • Product Quantity
    : 1
  • Starting Bid
    :3,060円
  • Highest Bidder
    : くまくま48 / Rating:4001
  • Listing Date
    :2025年12月27日 19時25分
  • Bidding closes on
    :2025年12月28日 10時19分
  • Auction Number
    :1212241263
  • Condition
    :New product
  • Automatic Extension
    :No
  • Authentication
    :No
  • Early Closing
    :Yes
  • Can I return the product?
    :no
  • Description
  • Q&A ()
  • Cost Estimator
  • Problem Item Response Procedur
科学玩具 ジャイロごま SGジャイロスコープ (レッド, 小/ディスク直径4cm)

【商品の説明】
ブランド、メーカー:株式会社 そろはむ
私もまだ子どもだった頃にお祭りの屋台などで地球ゴマの実演を目にして、「ふっしぎ〜っ!」と思ったものです。
きっと中には地球ゴマがきっかけとなって後に物理学(力学)を学び始めた子もたくさんいたことでしょう。
物体が回転する。たったそれだけで、面白い運動が起こる。
回転軸の向きを一定に保とうとする効果と、回転軸の向きを変えようとするとその向きと直角の向きへと回転軸が逃れようとする効果。…「ジャイロ効果」というやつです。
地球ゴマがあれば、ジャイロ効果を自分で感じつつ、いじりたおすことができます。それも、比較的安価なお値段で。(現在はプレミア価格がついて、10倍近くに上昇してますが…。)
私も地球ゴマを手にすることで、ジャイロ効果や回転モーメントなどを「実感」することができました。
まさに地球ゴマは「科学玩具の王様」です。地球ゴマに比類しうる科学玩具といったら、「磁石」とか「ばね」くらいのものじゃないでしょうか。
そんなわけで、2021年に『地球ゴマ 発売100周年』のイベントの一つもあってしかるべきなのですが、残念ながら主役が不在。
2015年、地球ゴマが生産されなくなってしまったのです。
ジャイロ効果は、現代でもいろんなところで利用されています。
今日、GPSのおかげで位置を精密に知ることができますが、GPSのエリア外になってしまう地中や宇宙空間となると、方向や回転を精密に計測して、位置を計算で求める必要があります。そんなわけで、地中掘削機械、宇宙機、さらにはロボットなどの方向&位置計測にジャイロ効果は使われています。
GPS衛星だって、ジャイロはなくてはなりません。
乗り物やロボットなどの姿勢制御に、ジャイロ効果を直接的に利用するものもあります。
向きを知るために、向きを制御するために、これからもジャイロ効果、つまりはコマに、私たちは頼らざるを得ません。
今も私の本棚には、地球ゴマが眠っています。
これほど大切なジャイロ効果について、その基礎の基礎を勉強させてくれる地球ゴマに、ありがとう! そしてこれからも、よろしく! です。

【商品の状態】
使用状況:新品未開封 長期保管品 
注意事項:終活出品 長期保管品 未開封新品
ノークレーム、ノーリターン、ノーキャンセルでお願いいたします。
上記の記載をご理解の上ご購入のご検討をお願い致します。

不明点はご質問ください。
The product has been closed, and you cannot ask questions.
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Product Price JPY
Japanese Consumption Tax(10%) JPY

A 10% consumption tax is applied to goods and services in Japan. The price may include the tax or it may be added separately. Please check the price details when ordering.

Note: This is a domestic sales tax applied within Japan.

Japan Local Shipping Fee JPY Japan Local Shipping Fee Reference
Product Weight KG The maximum weight limit is 30 kg
International Shipping Methods
Proxy bidding and purchasing services are becoming increasingly convenient. However, overseas shopping carries certain risks and issues. To reduce these risks and enhance shopping safety, please be sure to read the following information:

1. International Shipping

   Air Freight: If the item status is not confirmed within two days after the arrival notice, any customer complaints cannot be addressed with the seller.

2. After Receiving the Product

Please confirm and inspect the product as soon as possible to ensure that the product specifications, quantity, accessories, and description are correct

If, unfortunately, there are any issues, you can refer to the following examples on how to report related product problems:
1. Example of missing product information
2. Example of product not matching provided information
3. Example of damaged product information

Important Notes: 1. If the seller is unwilling to ship overseas or is unaware that the product will be shipped overseas, the international shipping cost for returns or exchanges will need to be borne by the member. You may refer to the EMS e-Express fee inquiry from the post office. If it involves alcoholic beverages or items that affect flight safety, the post office cannot be used for shipment, and only DHL can be used to ship back to Japan.
2. During the product complaint handling period, please retain the complete outer packaging of the product (including the shipping label information), and refrain from attempting any repairs or altering the original condition. Any modifications may result in the inability to process the case.

3. After Inspecting the Product

After receiving and inspecting the item, if you have any questions, it is recommended to contact Letao within 2 hours. Here are some reminders:

1. Please do not unpack, use or repair the received item yourself, and be sure to keep the original packaging to facilitate subsequent handling of related matters, so as to avoid changes to the item that may cause the seller to be unwilling to process.

2. You can call customer service, and the customer service will leave a message for you as below. Please provide the following information:
"Hello, we will first help you establish a complaint case for Product ID: _______ .But we need you to 2-3 clear photos of the product issue, including photos of the product problem, product packaging, shipping details slip, and outer box. Send them to service@letao.my and inform us of your desired resolution (failing to provide this may result in an inability to process subsequent matters). After sending the email, notify us in the customer service message. We will confirm with the seller as soon as possible. and if there are any related questions, we will contact you through the customer service message. Thank you for your cooperation."

Please provide:
1. "Product ID"
2. Photo of the "Delivery Note" (if any)
3. Photos of the outer box (including inner and outer packaging)
4. Photos of the product (Please include relevant descriptions to help us confirm with the seller)

Important Notes:
1. Do not include foreign text or other products in the background of the image.
2. Please keep the complete product packaging (including the shipping label information), and refrain from repairing or altering the original condition on your own, as any changes may result in the case being unable to be processed.
3. Please provide the relevant information within 48 hours to avoid missing the golden hour for reflection and causing situations that cannot be handled.
4. Due to 99% of Japanese sellers being unwilling or unaware of shipping goods overseas, if a seller is willing to handle the issue, the goods must be sent back to Japan, and the international shipping costs incurred must be borne by the member. Letao will use postal EMS international express to send the goods back to Japan.
5. As the goods are purchased from overseas, it may take approximately one to two weeks to complete the relevant processing procedures when issues arise with the goods. Please be reminded that you can inquire about the approximate cost through the EMS service at the post office.

4. FAQ

1. Issue of Authenticity: If antique or branded goods are found to be counterfeit upon receipt, clear photos showing the differences between the genuine product and the imitation must be provided as evidence. If unable to provide relevant proof, assistance can be sought to find a third-party reputable organization for a premium authentication service .
2. Leaking Iron Teapot: If an antique iron teapot is leaking, please take clear photos of the leaking area and provide them.
3. Transport Damage: If the goods are damaged during international shipping (to the pickup point), you need to provide photos of the outer packaging of the parcel and clear photos of the damaged goods' outer packaging.

※ Note: Photos provided to sellers should not contain any foreign-related information.
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    Product name: 地球ゴマ 教育玩具 SGジャイロクラッシック (RED)
    Notes:
    Customer service hours:
    • Monday to Friday 10:00-18:00
    Customer service hotline:
    Customer Service Email: service@letao.my