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28:34But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index
2.9M views • 2 years ago
3Blue1Brown
3Blue1Brown visualizes Feynman's lecture on the refractive index, explaining why light appears to slow down in glass and why the effect depends on color. It builds the idea from waves produced by oscillating charges in the material.
57:45The Simple Path to Wealth | JL Collins | Talks at Google
2M views • 8 years ago
Talks at Google
Author JL Collins discusses his book The Simple Path to Wealth at Google, covering avoiding debt, simple index fund investing, and retirement accounts like 401(k)s and IRAs. It is an hour-long interview in plain language.
29:43OpenAI Codex Live Demo
913K views • 5 years ago
OpenAI
OpenAI's 2021 live demo of Codex translating natural language into code, from Hello World to building a game and a Microsoft Word plugin.
25:39H3: Tiling the Earth with Hexagons
53K views • 8 years ago
Uber Engineering
Uber Engineering's Joseph Gilley explains why Uber uses hexagons for geospatial indexing and introduces H3, its open source hierarchical grid system. He covers use cases and how distortion is handled.
54:54Breakout Session Presented by Dan Robinson of Heap at PGConf Silicon Valley 2015
14K views • 10 years ago
Citus Data
Dan Robinson, then CTO of Heap, explains how Heap runs its product analytics backend on PostgreSQL and CitusDB. It covers conversion funnels, retention and cohort queries across tens of billions of events and 50 TB of data, plus Postgres and Kafka together and the indexing strategy.
30:13SpaceX IPO Scandal
1.4M views • 7 months ago
Patrick Boyle
Patrick Boyle examines SpaceX's planned IPO at a roughly $1.75 trillion valuation. He covers the merging of other Musk companies, orbital data center claims and the fast-track index rules that may help the listing.
46:58A new look at active vs passive (Michael Green)
26K views • 6 years ago
Bridge Alternatives
Michael Green of Thiel Macro presents a thesis that the growth of passive investing distorts how markets price new money flows. He ties short-term market behavior to longer-term demographic cycles and its effects on valuations and volatility.
59:13AWS re:Invent 2019: [REPEAT 1] Amazon DynamoDB deep dive: Advanced design patterns (DAT403-R1)
115K views • 6 years ago
AWS Events
An AWS re:Invent 2019 session for advanced DynamoDB users on design patterns used by large customers, including Amazon retail. It covers GSI sharding, index overloading, graph processing, composite keys and transactional workflows.
59:56AWS re:Invent 2018: Amazon DynamoDB Deep Dive: Advanced Design Patterns for DynamoDB (DAT401)
468K views • 7 years ago
Amazon Web Services
Rick Houlihan's AWS re:Invent 2018 deep dive on advanced DynamoDB design patterns. It covers index overloading, GSI sharding, composite keys, graph processing and transactions.
47:43"Turning the database inside out with Apache Samza" by Martin Kleppmann
205K views • 12 years ago
Strange Loop Conference
Martin Kleppmann argues that databases are global shared mutable state and proposes treating them as an ever-growing log of immutable facts. Derived data such as caches, indexes and views is then built by stream processors like Apache Samza. The talk draws on Kafka and LinkedIn's experience with commit logs.
32:21Turning Photons Into Food
97K views • 7 years ago
Apogee Instruments Inc.
Dr. Bruce Bugbee walks through the calculations for crop yield potential when light is the limiting factor, from photosynthetic quantum yield through respiration efficiency and harvest index, using the Energy Cascade Model.