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Description
Adjustable Speed Stirling Engine Model with Horizontal Flywheel Experiment ToyAdjustable Speed Stirling Engine Model with Horizontal Flywheel Experiment Toy Features: . Novel Design: The design of this Stirling engine model is novel and unique, with a simple and exquisite shape, and a sophisticated wooden base, which shows more high end taste. The top knob can adjust the amount of air conduction to control the speed of the Stirling engine, which is easy to observe the dynamics of the piston and bring more good look. . High
Adjustable Speed Stirling Engine Model with Horizontal Flywheel Experiment ToyFeatures:
.Novel Design: The design of this Stirling engine model is novel and unique, with a simple and exquisite shape, and a sophisticated wooden base, which shows more high-end taste. The top knob can adjust the amount of air conduction to control the speed of the Stirling engine, which is easy to observe the dynamics of the piston and bring more good look.
.High Quality: The main parts are made of aluminum alloy and brass, which are sturdy and durable. The heating cylinder is made of quartz glass with low expansion coefficient and high temperature resistance; fine workmanship, perfect details, and a combination of texture and beauty.
.Fuel: 95% alcohol (need to be prepared by yourself), pay attention to not add water, kerosene, gasoline, lighter oil, liquor, etc.
.Starting Method: Place the Stirling engine model on a horizontal table, add two-thirds of 95% alcohol to the alcohol lamp, ignite and heat for 30 seconds, then turn the flywheel, and the engine can run.
.Working Principle: The Stirling engine outputs power through a cycle of cooling, compression, heat absorption, and expansion of the air in the cylinder.
.Use Significance and Value: Through hands-on operation, you can observe the operation process of the entire engine, understand the working principle of the Stirling engine more intuitively, and deepen your interest in learning physics.
.Gift: Its superior quality and exquisite appearance also make it have a high collection value, can be used as a high-end desktop decoration, can also be used as exquisite gifts to give back to others.
.For Age: 14+
Specifications:
.Color: As Shown
.Material: Metal + Wood + Quartz Glass
.Product Dimensions: 10 x 10 x 10cm
.Product Weight: 320g
.Package Dimensions: 15 x 12 x 12cm
.Package Weight: 350g
.Packing: Box
Package Content:
.1 x Stirling Engine Model
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 11 reviews
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Product Reviews
★★★★★ 4
Good sun protection but leaves white streaks after sweating
Size: 5 Ounce (Pack of 1)
I really wanted to like this sunscreen after seeing it make a lot of lists for best sunscreen for runners. But for whatever reason, about 15-20 minutes into my runs and I've started really sweating, I see white streaks in my elbow crease. I've started developing weird tan lines in my elbow crease if I don't consciously try to re-rub and re-spread the sunscreen in my elbows periodically during my runs. If I only use the sunscreen for lower impact activities, I don't get the white streaks. It's as if from the sweat it pools the minerals from the sunscreen into my elbow crease. But yet I don't have that problem with the sweat mix with my sunscreen on other parts of my body. I've also switched to Australian Gold Botanical Mineral sunscreen which ironically isn't meant for sports, but I don't have the elbow crease white streaks issue with that sunscreen.
I will say, this Blue Lizard sunscreen does rub and spread easily and doesn't leave a white cast after rubbing it into my skin. Although it does feel mildly greasy after I'm done applying it everywhere. I've switch to Australian Gold Botanical Mineral sunscreen which doesn't feel greasy but it does leave a slight white cast on my tan skin, but I'll rather have that than deal with frequently needing to re-rub/re-spread the sunscreen in my elbow creases when white streaks form.
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Reviewed in the United States on June 9, 2023
★★★★★ 5
Like magic!
Size: 5 Ounce (Pack of 1)
Have been using this sunblock religiously for about 15 years. It is amazing! I highly recommend.
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Reviewed in the United States on March 1, 2026
★★★★★ 5
Go to sunscreen!
Size: 5 Ounce (Pack of 1)
Mineral based sunscreen was recommended to me after second degree burns. I love how the bottle changes color when UV is bad.
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Superb Hidden Treasure of a Sunblock
Color: White, Size: 6 Ounce (Pack of 1), Style: Baby
If you're spending 100's of dollars on top of the line SPF serums etc. that are just an ounce in size forget about that. This is sublime. The stuff is like magic. It makes my mid aged skin glow and stay moisturized AND blocks the pigment causing UV rays. I've had plenty of photofacials to treat dark spots and without mineral protection I find they just come back over and over. This works great for the times I can't have a hat on or areas of my face (or hands!) that are difficult to keep covered. No smell and for me the best part is NO IRRITATION WHATSOEVER to my eyes when even things that say they won't irritate eyes do. This stuff is GREAT!
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Reviewed in the United States on November 22, 2024
★★★★★ 5
Great for little ones
Color: White, Size: 6 Ounce (Pack of 1), Style: Baby
Works wonders for the little ones. I like that it’s a spray even though I have to rub it in. You can see when you spray it, it’s white in color, not clear, so you know your applying product. There is so much on the bottle. You do have to apply frequently to ensure coverage, but so much easier than the goopy liquid stuff.
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Reviewed in the United States on June 14, 2025