product description:
Drinking Bird Perpetual Motion (2 Pack) The Original Vintage Retro Magic Sippy Dipping Bird A Science Wonder Wholesale Bulk Set of 2. This incredible scientific toy is a childhood favorite. Call it a game, Science experiment, educational, an office desk toy, call it what you like. This novelty is great for all ages. A great physics thermodynamic gadget and perpetual motion desk, school or office toy. Just dip the birds head into a glass of water and soak his head. Adjust the middle metal piece to sit just below the center of his body. Place a glass of water in front of him so when he dips down he will be able to wet his beak and head. The Thermodynamics should kick into action. It is really cool to see the Happy Bird in motion rocking, bobbing and dipping up and back to get his fill of drink. To operate the Dippy Bird, you get its head wet. As the water evaporates, fluid moves up into the head, causing the bird to become top-heavy and dip forward. Once the bird dips forward, fluid moves back into the abdomen, causing the bird to become bottom-heavy and tip up. Here is how a Dippy Bird works: When water evaporates from the fuzz on the Dippy Bird s head, the head is cooled. The temperature decrease in the head condenses the methylene chloride vapor, decreasing the vapor pressure in the head relative to the vapor pressure in the abdomen. The greater vapor pressure in the abdomen forces fluid up through the neck and into the head. As fluid enters the head, it makes the Dippy Bird top-heavy. The bird tips. Liquid travels to the head. The bottom of the tube is no longer submerged in liquid. Vapor bubbles travel through the tube and into the head. Liquid drains from the head, displaced by the bubbles. Fluid drains back into the abdomen, making the bird bottom-heavy. The bird tips back up. If the bird dips into a cup of water, the fuzzy material absorbs water again and the cycle starts over.
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Customer Common Questions & Answers:
Question: You have imported quality products. What is the price of Drinking Bird Perpetual Motion (2 P… in Pakistan?
Answer: The pricing of our products is determined by their weight and size. Additionally, fluctuations in the dollar exchange rate in Pakistan may result in changes to our prices. To obtain the most accurate and up-to-date pricing, please check our website or contact our sales representative before placing your order.
Question: We want 100% original and authentic Drinking Bird Perpetual Motion (2 P… in Pakistan. How I will place my order on shoppingbag.pk?
Answer:
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Question: Do you have physical shop or store of Drinking Bird Perpetual Motion (2 P… in Pakistan?
Answer: No, we don't have physical store but you can place your from our office or from online.
Question: Do you ship orders all cross the Pakistan?
Answer: Yes, we ship in almost all the cities of Pakistan using famous courier & logistic services of Pakistan.
Question: How soon can I get my order?
Answer:Since we import products from USA, Canada, UK or China so it take 3 to 4 weeks. We do our best to make import process fast and smooth and try to deliver ASAP all across Pakistan.
Question: Can I place my order from outside of Pakistan?
Answer: Yes! you can do until or unless you can deposit 30% advance using one of our payment methods you can place order from anywhere of world.
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Answer: We always try to buy products using Amazon USA from the brands or official resellers. In case of any confusion we can share amazon or eBay order ID with you so you can check with them directly.
Question: How to verify product quality?
Answer: Since we buy your products from Amazon USA so you can read product reviews before to orders us. For your convenience, you can find the product review link on all the product pages.
Question: Do you offer returns & exchange?
Answer: We have no product exchange policy. Yes! If you get wrong product or if product not working properly, you can return it within 3 days of delivery.
Question: What is your refund policy?
Answer: In case your refund approve we try to make sure it within 7 days.
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Answer: If the product you get will be different from the one you order then we will make its 100% refund.
Question: Technical detail available on shoppingbag.pk is replacement of professional advice?
Answer: No, it's for reference only. Consult with right more technical person before to use.
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