The Invention of the Thermos Flask
The Invention of the Thermos Flask — an illustrated inventions story, set in Germany. 10 illustrated pages, free to read on Wonder Inventions.
Page 1
"Look at that constellation, Naya!" Rania exclaimed, pointing towards the swirling, luminous clouds. Naya peered through the giant telescope in their mountaintop observatory, her breath fogging the lens slightly. "It looks like... joy?" she asked, scribbling notes in her worn leather notebook, "How do we keep our drinks warm during long shifts mapping emotions like these?"
Page 2
Rania chuckled. "That's a great question! People used to have a much harder time keeping things warm. Imagine drinking cold tea while trying to spot a new constellation!" Naya flipped open her glowing 'Invention Encyclopedia'. "Who invented the thing that keeps drinks hot?" she asked, her eyes sparkling with curiosity. Suddenly, the room dissolved in a swirl of light.
Page 3
They landed with a gentle thump in a cluttered workshop, filled with glass tubes and strange-looking equipment. "Wow, where are we?" Naya exclaimed, brushing dust off her skirt. Rania examined a nearby blueprint. "This looks like... Germany, around 1903. Get ready, Naya, we're about to meet a genius!"
Page 4
A man with a neatly trimmed mustache and spectacles rushed towards them, wiping his hands on his apron. "Excuse me, can I help you? I am Reinhold Burger!" he said in a thick German accent. "I'm Naya, and this is Rania! We're curious about... well, how did people keep things hot or cold before there were... thermos flasks?"
Page 5
"Ah, a very good question!" Burger beamed. "Before the thermos, keeping liquids at a consistent temperature was terribly difficult! I had to drink cold tea during my long days working! Imagine trying to study liquid air without a way to keep it stable! I initially collaborated with my friend Carl von Linde of Linde Cryogenics, a pioneer in industrial gas production, in 1903. Together, we filed German Patent number 170,257"
Page 6
"So how did it work?" Naya asked, scribbling furiously in her notebook. Burger held up a glass flask. "It's quite simple, really! Two glass bottles, one inside the other, with a vacuum in between! I created a vacuum between the walls of two bottles to prevent heat transfer by conduction or convection—the same principle applied to an earlier invention by Sir James Dewar of Oxford University! I then secured patents, but lost them due to earlier invention"
Page 7
"But it wasn't always smooth sailing," Burger sighed. "Getting the vacuum just right was tricky! Some flasks exploded! There were many failures before I partnered with Thermos GmbH, in 1909, which helped me scale up the production! I needed the right team so the Thermos could warm the world!"
Page 8
Naya's eyes widened. "So, it was a team effort!" she exclaimed. "Like mapping the constellations, it took many brilliant minds to bring the thermos to the world. We could never have mapped emotions as constellations if we couldn't keep our coffee warm!" Rania smiled. "That's right, Naya. And as Helen Keller said, 'Alone we can do so little, together we can do so much.'"
Page 9
Suddenly, the light swirled again, and they found themselves back in the observatory. Naya closed the 'Invention Encyclopedia' with a satisfied smile. "Wow, it's hard to believe that something as simple as a thermos changed the world!"
Page 10
Naya grabbed her notebook and ran to Jia, who was setting up another telescope. "Jia, guess what I learned about the thermos flask!" she exclaimed. "It's all about keeping our celestial mapping beverages hot so we can observe emotions as constellations!" Naya said. She handed Jia a cup of tea, "After all, the thermos flask industry generates over 3 billion annually!"
About this story
- Location: Germany
- Audience: kids (ages 6–12)
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