What is the history behind quantum mechanics?

~ < 1 of audio

Speed: 1.00

Author note.

Explore voice = Exploratory style. Very punchy. Personal, and lively using “me,” “you,” “us,” and “I” freely.

I want you to feel me right there with you. We use “I” and “me” and “us” without apology. If the Explain voice is a bridge, the Explore voice is the hike we take across it. It is lively, reflective, and sometimes a bit raw. It is the sound of a shared exploration where I lead you by the hand, but we both discover the view at the same time.

This is where I get to think out loud. Not with definitions, we aren’t just looking at the facts; we are looking at how they feel and what they mean for our lives. I’m talking to you about what I’ve found and what I’m still figuring out. It is engaging because it is real, and it is reflective because it is honest.

The goal is real advice and enjoyable reading. I want to land on something you can actually use. It’s about being direct, being punchy, and making sure that by the time we reach the end of the page, we’ve both found something worth keeping.

And now the piece.

What is the history behind quantum mechanics?

Here is the history of quantum mechanics in one minute.

Before 1687, before Newton, we observed and described gravity, but we described falling objects and celestial motion as separate things. Newton’s brilliance was unifying gravity as a universal force governing both apples and planets. He gave us precise math that let us land on the Moon. These descriptions appeared so complete, we still call them laws today.

In 1916, Einstein came along and did the impossible, he broke Newton’s laws. He replaced Newton’s force with a property of space itself. Gravity is the curvature of space-time and everywhere all at once and changes do not reach across the universe instantly, they travel at the speed of light. If the Sun vanished, we would feel and see it about 8 minutes later.

In the 1920s, quantum mechanics emerged to describe small-scale stuff. We started confirming observations, but could not explain them well. In the 1930s, Heisenberg and Bohr noted inconsistencies between General Relativity and Quantum Mechanics. The kicker? To this day, no one can reconcile these inconsistencies. The quantum mechanics era of physics is filled with speculation. How long will it take for us to explain it all well? Einstein tried and failed. He passed in 1955. Countless others tried too. Is the next Einstein even born yet?

I have no doubt we will unify our descriptions. Afterall, they are only descriptions, not reality itself. We are simply looking for a way to describe and predict all observations. I’m confident we can come up with a unified description. A model that may be more like an analogy, but it will describe and predict all our scientific observations.

Here's the key idea. By tradition, quantum theory was born on December 14, 1900, when Max Planck cracked classical physics with the strange idea that energy comes in discrete packets.

Finally, the core takeaway. Before Newton, we observed falling things, weight, and the heavens. Newton unified those observations into the universal force of gravity. Einstein came along and broke Newton's law and redefined gravity as the fabric of space-time, but his idea of smooth space failed at the sub-atomic. Quantum mechanics, a collection of our best ideas about the small-realm, came along and quantized space. It says space comes in small packets.

That History FAQ,

was first published on TST 2 months ago.

The flashcard inspired by it is this.

Front: In Physics, the smallest discrete unit of a field?

Back: Quantum (Plural: Quanta)

All this is part of the broader TST project.

When a source is corrected or expanded, it can be updated once at the tidbit level and reflected everywhere it appears.

Each weekly edition of the TST Weekly Column consists of a central column supported by a research layer of stories, quotes, timelines, and FAQs.

The end!