Early access is open to the waitlist
A personalized wiki. A podcast from any page.
Like Wikipedia, but every page is written for you: around what you love and how you like it explained. It learns as you read.
Coming soon to the App Store for iPhone.
Free, one per email, usually within the hour. Plus early access: your wiki on the web now, the iPhone app soon.
From our videos
Hear the whole story
Every video has a full episode behind it. Pick one up where the video left off.
Same topic. Not the same page.
Three readers open Black holes. Each gets a page written for them, from what their wiki has learned about them.
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A reader who is: New to physics Likes everyday examples
Black holesWritten for you
Picture a bowling ball on a trampoline: anything rolling past curves toward it. A black hole is a dip so deep that nothing climbs back out, not even light. Most form when a massive star runs out of fuel and falls in on itself.
Contents
- The point of no return
- How they form
- Could one swallow Earth?
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A reader who is: Studied physics Wants the math
Black holesWritten for you
A region of spacetime whose escape velocity exceeds the speed of light. For a non-rotating mass the event horizon sits at the Schwarzschild radius, r = 2GM/c², about 3 km for every solar mass.
Contents
- Schwarzschild metric
- Kerr black holes
- Hawking radiation
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A reader who is: Into history Likes the people behind it
Black holesWritten for you
Weeks after Einstein published general relativity, Karl Schwarzschild solved its equations while serving on the Eastern Front and found a point of no return. Einstein doubted such a thing could exist. It took Cygnus X-1, in the 1970s, to convince astronomers.
Contents
- A letter from the front
- Einstein’s doubts
- The first one found
Your wiki learns you
What you’re into
Your map leans toward what you read and listen to, and your wiki’s front page picks from it.
How you like it explained
Ask about a page or rate it and it’s written again. Every page after remembers: more examples, more math, fewer dates.
What you already know
Know the basics? Your pages skip ahead. New to something? They start from the ground up.
Wander your own wiki
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Your wiki is a map
Everything you’re curious about, as bubbles. Solid ones you’ve read. Dashed ones are waiting for you.
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Wander it
Tap a bubble and it opens into the topics around it. There’s always one more.
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Every bubble is a page
Written like Wikipedia, with blue links, Contents and See also. Every link is somewhere to go next.
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Written for you
Ask about a page or rate it, and it’s written again for you. Your wiki remembers how you like it, so every page after fits you too.
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Hear any page
Turn a page into a podcast. Two hosts talk it through, from the basics to the drama, in a few minutes.
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Watch it grow
What you read and hear joins your map, with new bubbles to wander next.
Our mission
Give each person the world’s knowledge, shaped around them.
An encyclopedia writes one page for everyone. Yours should be written for you. About Knowmad
Any page, as a podcast
Press play on a page and two hosts talk it through, from the basics to the drama. Here’s a whole episode, just as the app made it. The first 3 minutes are free; put your name on the waitlist for the rest.
That was the first 3 minutes. Put your name on the waitlist to hear the rest.
Coming soon to the App Store for iPhone.
Free, one per email, usually within the hour. Plus early access: your wiki on the web now, the iPhone app soon.
Chapters
- Intro 0:00
- Nuisance wildlife management 1:40
- Walgoolan, Western Australia 5:42
- Emu 12:51
- Lewis gun 19:43
- Outro 27:37
Transcript
Pages and episodes are made with AI from research papers and open sources. Double-check anything important.
Your wiki is waiting.
Join the waitlist for early access: your wiki on the web today, the iPhone app soon. Pick any topic and we’ll email you an episode about it.
Coming soon to the App Store for iPhone.
Free, one per email, usually within the hour. Plus early access: your wiki on the web now, the iPhone app soon.
Questions or ideas? Say hi.