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[The Accidental Invention of the Microwave: A Lesson in Irregular Verbs]-[191 - Irregular Verb Story: The (Funny) Invention of the Microwave]

American English Podcast · B1 · 2025-06-13

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📋 Summary

The Accidental Invention of the Microwave: A Lesson in Irregular Verbs

In this episode of the American English Podcast, host Shauna explores the fascinating, accidental origins of the microwave oven while simultaneously providing an engaging lesson on English irregular verbs. The episode centers on the story of Percy Spencer, an engineer whose curiosity transformed a workplace mishap into a household revolution.

The Discovery: A Melting Chocolate Bar

Back in the 1940s, while working at Raytheon in Waltham, Massachusetts, Percy Spencer was developing radar systems for the U.S. military. One day, while standing in front of an active magnetron—a vacuum tube that produces microwaves—Spencer felt something strange in his lab coat pocket. Upon reaching in, he found a "warm, gooey mess": his chocolate bar had mysteriously melted. Driven by his scientific nature, Spencer sprang into action to investigate the phenomenon.

From Popcorn to Exploding Eggs

Spencer’s experimentation began with popcorn. He laid the kernels near the magnetron, and within seconds, they popped, proving that the microwaves were indeed cooking the food. This realization "blew his mind." Further experiments involved a metal kettle, into which he cut a hole to insert an egg. Unfortunately, the timing was poor; a colleague took a peek, and the egg exploded all over his face. Despite the mess, Spencer knew he was onto something revolutionary. He built a metal box to safely trap the microwaves, which became the prototype for the "Raider Range."

The Evolution of the Microwave Oven

Released in 1946, the first commercial microwave was a behemoth: it stood six feet tall, weighed 750 pounds, and cost an equivalent of over $60,000 today. It was primarily bought by airlines, ships, and restaurants. However, as technology advanced, microwave ovens became smaller and more affordable, eventually finding their way into global households by the 80s and 90s.

Linguistic Takeaways: Mastering Irregular Verbs

Shauna uses this story to reinforce the usage of 20 irregular verbs, emphasizing that they do not follow the standard "-ed" ending pattern in the simple past tense. Key verbs highlighted throughout the narrative include:

  • Find/Found: Spencer found a warm mess in his pocket.
  • Spring/Sprang: He sprang into action to investigate.
  • Get/Got: He got some popcorn to test his theory.
  • Lay/Laid: He laid the kernels near the magnetron.
  • Understand/Understood: He finally understood that the device was cooking food.
  • Blow/Blew: The discovery blew his mind.
  • Cut/Cut: He cut a hole in a metal kettle.
  • Put/Put: He put an egg inside the device.
  • Know/Knew: He knew he had discovered something revolutionary.
  • Buy/Bought: The first microwaves were bought by commercial entities.

Fun Facts and Final Thoughts

Beyond the grammar lesson, the episode shares quirky trivia. For instance, despite his 300+ inventions, Spencer received only a two-dollar bonus for the microwave. The episode also touches on the "Speedy Weenie," a microwave vending machine for hot dogs found in New York’s Grand Central Station in 1947.

Shauna concludes by noting that while some people remain skeptical about microwave safety, scientific consensus confirms that our "brain and burrito are safe." The episode serves as both a helpful guide for English learners to memorize irregular verbs through repetition and a delightful look at how one engineer's snack mishap changed the way the world cooks.

🎯Key Sentences

1
I'm not exaggerating, I'll explain why in a second.
2
What on earth had happened?
3
Percy sprang into action.
4
It blew his mind.
5
Talk about bad timing.
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📝Key Phrases

1
spring into action
2
blow one's mind
3
be onto something
4
cost an arm and a leg
5
to top it off
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📖 Transcript

Hi, everybody. My name is Shauna, and this is the American English podcast. My goal here is to teach you the English spoken in the United States.
Through common expressions, pronunciation tips, and interesting cultural snippets or stories, I hope to keep this fun, useful and interesting.
Let's do it. The other day, I researched most interesting inventions from the United States with the goal to find a story that might be funny or a little bit different for today.
And I ended up discovering the invention of the microwave, which is sort of a discovery mixed with an invention.
And the story is amazing.
I'm not exaggerating, I'll explain why in a second.

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