Keep reading for FREE
The Start Of Calculating Time
The oscillator, invented by Christiaan Huygens and used in most mechanical clocks, measures time with resonance, a pendulum of a fixed length moving back and forth.
This frequency mapping of oscillating movement was improvised in the 18th century by John Harrison.
40
388 reads
MORE IDEAS ON THIS
Modern Clocks: Quartz Crystal To Atomic
Quartz crystal, a tiny musical tuning fork of high frequency and stability, is used in most modern clocks. The atomic clock, which all our normal clocks check to discipline themselves, was first built by Louis Essen. It worked by calculating the flipping frequency of electrons in caesium atoms.
40
287 reads
Better Than Atomic Clocks
Ultra-fast lasers, linked to atomic clocks, creates a new kind of optical atomic clock that is being researched by scientists. It is about a hundred times more precise than previous atomic spin measurements.
Such hyper-accurate time using laser beams provides new ways for scientists to de...
41
315 reads
Measuring Time
We usually check the time using smartwatches and smartphones, which have clocks tallying the time with signals from atomic clocks, some of which are installed on GPS satellites.
The signals from atomic clocks are now becoming increasingly accurate, allowing us to measure gravity waves in ...
43
893 reads
CURATED FROM
CURATED BY
MORE LIKE THIS
The meaning of "museum"
- The word "museum" comes from Ancient Greek "mouseion" which meant "seat of Muses." It was used as a place for contemplation.
- In Rome, "museum" was a place used for philosophical discussions.
- In the 15th century, the word "museum" was used to describe the collection of Lore...
The history of refrigeration
Refrigeration is the action of creating cooling conditions by removing heat. It is used for preserving food by slowing bacteria growth.
- Around 1000BC, the Chinese used to cut and store ice.
- Five hundred years later, the Egyptians and Indian...
The First Video Game
Though 1972’s Pong has often been credited as the first popular video game, the mantle goes to Tennis For Two, which was created by a nuclear physicist, William Higinbotham, in 1958.
The primitive game was a sideways view of a tennis court, with the ball moving back and ...
Ready for the next level?
Read Like a Pro
Explore the World’s
Best Ideas
200,000+ ideas on pretty much any topic. Created by the smartest people around & well-organized so you can explore at will.
An Idea for Everything
Explore the biggest library of insights. And we've infused it with powerful filtering tools so you can easily find what you need.
Knowledge Library
Powerful Saving & Organizational Tools
Save ideas for later reading, for personalized stashes, or for remembering it later.
Start
31 IDEAS
Start
44 IDEAS
# Personal Growth
Take Your Ideas
Anywhere
Organize your ideas & listen on the go. And with Pro, there are no limits.
Listen on the go
Just press play and we take care of the words.
Never worry about spotty connections
No Internet access? No problem. Within the mobile app, all your ideas are available, even when offline.
Get Organized with Stashes
Ideas for your next work project? Quotes that inspire you? Put them in the right place so you never lose them.
Start
47 IDEAS
Start
75 IDEAS
My Stashes
Join
2 Million Stashers
4.8
Stars
5,740 Reviews
App Store
4.7
Stars
72,690 Reviews
Google Play
samz905
Don’t look further if you love learning new things. A refreshing concept that provides quick ideas for busy thought leaders.
“
Shankul Varada
Best app ever! You heard it right. This app has helped me get back on my quest to get things done while equipping myself with knowledge everyday.
“
Ashley Anthony
This app is LOADED with RELEVANT, HELPFUL, AND EDUCATIONAL material. It is creatively intellectual, yet minimal enough to not overstimulate and create a learning block. I am exceptionally impressed with this app!
“
Sean Green
Great interesting short snippets of informative articles. Highly recommended to anyone who loves information and lacks patience.
“
Ghazala Begum
Even five minutes a day will improve your thinking. I've come across new ideas and learnt to improve existing ways to become more motivated, confident and happier.
“
Giovanna Scalzone
Brilliant. It feels fresh and encouraging. So many interesting pieces of information that are just enough to absorb and apply. So happy I found this.
“
Laetitia Berton
I have only been using it for a few days now, but I have found answers to questions I had never consciously formulated, or to problems I face everyday at work or at home. I wish I had found this earlier, highly recommended!
“
Jamyson Haug
Great for quick bits of information and interesting ideas around whatever topics you are interested in. Visually, it looks great as well.
“
Read & Learn
20x Faster
without
deepstash
with
deepstash
with
deepstash
Access to 200,000+ ideas
—
Access to the mobile app
—
Unlimited idea saving & library
—
—
Unlimited history
—
—
Unlimited listening to ideas
—
—
Downloading & offline access
—
—
Personalized recommendations
—
—
FAQ
Claim Your Limited Offer
Get Deepstash Pro