On This Day in Tech History

Stories Published|December 21|Throughout History

Historic Tech Events

Tesla launched the SUV Cybertruck

Tesla launched the SUV Cybertruck

2019

Tesla launched the SUV Cybertruck. A gaffe occurs during the launch event when its "unbreakable" windows shatter during demonstration.

Albert Einstein's mass energy equivalence was published

Albert Einstein's mass energy equivalence was published

1905

Albert Einstein's paper that leads to the mass–energy equivalence formula, E = mc², was published in the journal Annalen der Physik.

The first measurement of the speed of light

The first measurement of the speed of light

1676

In 1676, the Danish astronomer Ole Roemer (1644–1710) became the first person to measure the speed of light.

Stories Published in 2025

/why-the-hackernoon-blogging-course-is-the-writing-upgrade-youve-been-waiting-for feature image

#HACKERNOON-BLOGGING-COURSE

Why the HackerNoon Blogging Course Is the Writing Upgrade You’ve Been Waiting For

Editing Protocol

Editing Protocol

November 21, 2025

/the-developer-experience-tax-hidden-inside-your-design-system feature image

#DESIGN-SYSTEMS

The Developer Experience Tax Hidden Inside Your Design System

November 21, 2025

/as-crypto-matures-centralization-creeps-back-into-the-system feature image

#CRYPTO-ADOPTION

As Crypto Matures, Centralization Creeps Back Into the System

Christopher Louis Tsu

Christopher Louis Tsu

November 21, 2025

/stop-building-your-product-for-yourself-why-most-early-stage-startups-fail-at-marketing feature image

#STARTUP-ADVICE

Stop Building Your Product for Yourself: Why Most Early-Stage Startups Fail at Marketing

Iryna Manukovska

Iryna Manukovska

November 21, 2025

/mutuum-finance-raises-over-$19-million-in-funding-phase-6-nears-sellout-at-90percent-completion feature image

Mutuum Finance Raises Over $19 Million In Funding, Phase 6 Nears Sellout at 90% Completion

November 21, 2025

/spring-boot-audit-logs-capture-every-api-action-without-writing-boilerplate-code feature image

Spring Boot Audit Logs: Capture Every API Action Without Writing Boilerplate Code

November 21, 2025

/building-stylegan-in-pytorch-from-theory-to-code feature image

#STYLEGAN-PYTORCH-TUTORIAL

Building StyleGAN in PyTorch: From Theory to Code

@hacker66938857

November 21, 2025

/10-essential-java-libraries-how-essential-are-they-really feature image

10 Essential Java Libraries - How Essential Are They Really?

Nicolas Fränkel

Nicolas Fränkel

November 21, 2025

/use-laravel-and-traefik-to-dynamically-configure-for-effortless-multi-domain-management feature image

Use Laravel and Traefik to Dynamically Configure for Effortless Multi-Domain Management

Daniel, Andrei-Daniel Petrica

Daniel, Andrei-Daniel Petrica

November 21, 2025

Stories Published in 2024

/how-to-craft-inclusive-ai-prompts-that-mitigate-bias feature image

#ARTIFICIAL-INTELLIGENCE

How to Craft Inclusive AI Prompts That Mitigate Bias

November 21, 2024

/stalker-2-from-legacy-to-legend feature image

S.T.A.L.K.E.R. 2: From Legacy to Legend

November 21, 2024

/mastering-scraped-data-management-ai-tips-inside feature image

Mastering Scraped Data Management (AI Tips Inside)

November 21, 2024

/unlocking-the-power-of-signatures-in-anomaly-detection feature image

#NON-LINEAR-DATA-ANALYSIS

Unlocking the Power of Signatures in Anomaly Detection

Computational Technology for All

Computational Technology for All

November 21, 2024

/halo-security-launches-slack-integration-for-real-time-alerts-on-new-assets-and-vulnerabilities feature image

Halo Security Launches Slack Integration For Real-Time Alerts On New Assets And Vulnerabilities

November 21, 2024

/usdc-and-cctp-to-launch-on-aptos-with-stripe-adding-aptos-support-in-crypto-products feature image

USDC And CCTP To Launch On Aptos, With Stripe Adding Aptos Support In Crypto Products

November 21, 2024

/ike-goes-live-on-mainnet-unlocking-liquid-staking-on-aleph-zero feature image

Ike Goes Live On Mainnet: Unlocking Liquid Staking On Aleph Zero

November 21, 2024

/coinshift-launches-csusdl-announces-strategic-partnerships feature image

Coinshift Launches csUSDL, Announces Strategic Partnerships

November 21, 2024

/how-k-sif-and-sif-revolutionize-anomaly-detection-in-complex-datasets feature image

#NON-LINEAR-DATA-ANALYSIS

How K-SIF and SIF Revolutionize Anomaly Detection in Complex Datasets

Computational Technology for All

Computational Technology for All

November 21, 2024

Stories Published in 2023

/twitter-stock-shares-and-certificates-the-rules-behind-them-all feature image

#TECH-COMPANIES

Twitter Stock, Shares, and Certificates: The Rules Behind Them All

November 21, 2023

/hamilton-k-fisker-again feature image

HAMILTON K. FISKER AGAIN

Anthony Trollope

Anthony Trollope

November 21, 2023

/christian-diors-enduring-legacy-and-advocacy-for-mental-health feature image

Christian Dior's Enduring Legacy and Advocacy for Mental Health

November 21, 2023

/how-to-implement-server-side-interceptors-for-logging-grpc-requests feature image

How to Implement Server-Side Interceptors for Logging GRPC Requests

Dmitrii Antonov

Dmitrii Antonov

November 21, 2023

/interview-with-petr-gusev-how-to-manage-an-ml-team-the-right-way feature image

Interview with Petr Gusev: How To Manage an ML Team the Right Way

Javier Ortega-Araiza

Javier Ortega-Araiza

November 21, 2023

/crypto-markets-going-up-again-time-to-pause-the-revolution feature image

#CRYPTOCURRENCY

Crypto Market’s Going Up Again. Time to Pause the Revolution

November 21, 2023

/delaware-attorney-general-sues-meta-for-violating-the-consumer-fraud-act feature image

#UNITED-STATES-V-META

Delaware Attorney General Sues Meta for Violating the Consumer Fraud Act

Save the Kids From Meta

Save the Kids From Meta

November 21, 2023

/delaware-dtpa-battle-attorney-general-accuses-meta-of-misleading-conduct-and-violations feature image

#UNITED-STATES-V-META

Delaware DTPA Battle: Attorney General Accuses Meta of Misleading Conduct and Violations

Save the Kids From Meta

Save the Kids From Meta

November 21, 2023

/meta-accused-of-harms-to-connecticut-users-in-unfair-trade-practices-case feature image

#UNITED-STATES-V-META

Meta Accused of Harms to Connecticut Users in Unfair Trade Practices Case

Save the Kids From Meta

Save the Kids From Meta

November 21, 2023

Stories Published in 2022

/variables-in-java-what-they-are-and-how-they-are-used feature image

Variables in Java: What They Are and How They Are Used

Augustine Igboke

Augustine Igboke

November 21, 2022

/vpns-vs-streaming-platforms-the-never-ending-war feature image

VPNs vs. Streaming Platforms: The Never-Ending War

November 21, 2022

/lua-land-cpu-flame-graphs-in-openresty-xray feature image

Lua-Land CPU Flame Graphs in OpenResty XRay

November 21, 2022

/creating-an-awesome-movie-catalog-in-notion feature image

Creating an Awesome Movie Catalog in Notion

Supratim Samanta

Supratim Samanta

November 21, 2022

/why-did-today-feel-like-a-black-mirror-episode feature image

Why Did Today Feel like a Black Mirror Episode?

November 21, 2022

/edge-ai-the-innards-use-cases-benefits-and-barriers feature image

#ARTIFICIAL-INTELLIGENCE

Edge AI: the Innards, Use Cases, Benefits, and Barriers

November 21, 2022

/why-your-restaurant-needs-a-direct-online-ordering-system feature image

#ONLINE-ORDERING-SYSTEM

Why Your Restaurant Needs a Direct Online Ordering System

November 21, 2022

/how-to-create-a-custom-state-management-library-with-react-hooks-and-context-api feature image

How to Create a Custom State Management Library With React Hooks and Context API

November 21, 2022

/how-to-define-user-behavior-using-methods-like-grouping-2x2-matrix-and-venn-diagram feature image

How to Define User Behavior Using Methods Like Grouping, 2x2 Matrix, and Venn Diagram.

November 21, 2022

Stories Published in 2021

/nft-the-treachery-of-digital-images feature image

NFT: The Treachery of Digital Images

Tobias W. Kaiser

Tobias W. Kaiser

November 21, 2021

/the-one-true-metaverse-shall-be-decentralized feature image

The One True Metaverse Shall Be Decentralized

November 21, 2021

/protect-your-availability-during-the-holiday-season-the-smart-way feature image

Protect Your Availability During The Holiday Season The Smart Way

November 21, 2021

/wtf-is-impermanent-loss-in-defi-and-how-to-avoid-it feature image

WTF is Impermanent Loss in DeFi and How To Avoid It?

November 21, 2021

/meet-spellfire-the-legendary-collectible-card-game-reimagined-blockchain feature image

#CRYPTOCURRENCY

Meet Spellfire, the Legendary Collectible Card Game Reimagined Blockchain

November 21, 2021

/is-virtual-reality-the-future-of-docial-media feature image

#VIRTUAL-REALITY

Is Virtual Reality the Future of Social Media?

November 21, 2021

/how-aspiration-killed-my-motivation feature image

How Aspiration Killed My Motivation

November 21, 2021

/what-are-the-most-challenging-problems-cryptocurrencies-are-facing feature image

What Are the Most Challenging Problems Cryptocurrencies Are Facing

Vitalik Buterin

Vitalik Buterin

November 21, 2021

/how-a-wormable-android-malware-used-to-spread-using-whatsapp-auto-replies feature image

How a Wormable Android Malware Used to Spread Using WhatsApp Auto-Replies

Check Point Software

Check Point Software

November 21, 2021

Stories Published in 2020

/5-top-programming-languages-every-ethical-hacker-needs-to-learn-osr3wsv feature image

#PROGRAMMING-LANGUAGE-FOR-HACK

5 Top Programming Languages Every Ethical Hacker Needs To Learn

Shashiraj Walsetwar

Shashiraj Walsetwar

November 21, 2020

/seven-ux-lessons-from-apples-big-sur-update-6d1y3zqq feature image

Seven UX Lessons from Apple's Big Sur Update

November 21, 2020

/hybrid-ai-for-personal-medicine-y8213z9y feature image

Hybrid AI for Personal Medicine

Georgii Dernovyi

Georgii Dernovyi

November 21, 2020

/are-you-where-you-say-you-are-user-verification-based-on-typing-patterns-dl3k3zfj feature image

#PASSWORD-SECURITY

Are You Where You Say You Are? - User Verification Based on Typing Patterns

November 21, 2020

/the-ultimate-instagram-seo-guide-for-photographers-cz4a3ze4 feature image

#SEO-OPTIMIZATION

The Ultimate Instagram SEO Guide for Photographers

November 21, 2020

/how-to-optimize-large-scale-serverless-applications-for-operational-excellence-0n4m3w35 feature image

How to Optimize Large Scale Serverless Applications for Operational Excellence

Taavi Rehemägi

November 21, 2020

/why-you-should-learn-ethics-of-ai-with-this-free-online-course-r61n3wem feature image

Why You Should Learn Ethics of AI With This Free Online Course

Frederik Bussler

Frederik Bussler

November 21, 2020

/how-blockchain-may-disrupt-medical-tourism-in-the-asean-region-432o3wmo feature image

How Blockchain May Disrupt Medical Tourism in the ASEAN Region

November 21, 2020

/6-things-were-learning-at-hacker-noon-jf6h3zbr feature image

6 Things We're Learning at Hacker Noon

Limarc Ambalina

Limarc Ambalina

November 21, 2020

Stories Published in 2019

/kafka-gotchas-l814320y feature image

Kafka Gotchas

November 21, 2019

/how-c-program-converts-into-assembly-0m1f32f5 feature image

How C Program Converts Into Assembly

Vishal Chovatiya

Vishal Chovatiya

November 21, 2019

/leveraging-multithreading-to-read-large-files-faster-in-go-lmn32t7 feature image

Leveraging Multithreading To Read Large Files Faster In Go

Mohammed Gadiwala

Mohammed Gadiwala

November 21, 2019

/what-amazon-doesnt-want-you-to-know-about-its-automation-strategy-ir1l32f6 feature image

What Amazon Doesn’t Want You to Know About Its Automation Strategy

November 21, 2019

/q-how-you-can-increase-stack-frame-size-a-alloca-is-the-answer-google-about-it-or-see-this-r828332ch feature image

How C program stored in RAM memory

Vishal Chovatiya

Vishal Chovatiya

November 21, 2019

/an-overview-of-the-nocode-space-f8s32l9 feature image

An Overview Of The Nocode Space

November 21, 2019

/the-evolution-of-headphones-6f1l321b feature image

The Evolution of Headphones

November 21, 2019

/blog-post-the-most-important-questions-for-crypto-cost-basis-rqd327z feature image

Questions On Crypto Cost Basis That You Need to Ask

November 21, 2019

/where-to-find-data-to-make-smart-business-decisions-d8z3za3 feature image

#SMART-BUSINESS

Where To Find Data To Make Smart Business Decisions

November 21, 2019

Stories Published in 2018

/evaluating-drivers-of-cryptocurrency-mass-adoption-62fbc961fb00 feature image

#CRYPTOCURRENCY

Evaluating Drivers of Cryptocurrency Mass Adoption

Shingai Thornton

Shingai Thornton

November 21, 2018

/tools-for-makers-a-hand-curated-directory-of-tools-for-indie-makers-8f50d7fcb8 feature image

Tools for Makers: A hand-curated directory of tools for indie makers

November 21, 2018

/8-uncommon-hacks-to-make-a-great-first-impression-2d332f8ad728 feature image

#PERSONAL-DEVELOPMENT

8 Uncommon Hacks To Make A Great First Impression

November 21, 2018

/want-a-career-in-fiber-optics-heres-where-to-start-d6a12d7f9834 feature image

Want a Career in Fiber Optics? Here’s Where to Start!

November 21, 2018

/the-worst-reason-to-hire-a-software-consultancy-eac677dc40e4 feature image

#SOFTWARE-DEVELOPMENT

The worst reason to hire a software “consultancy”

November 21, 2018

/how-to-easily-use-curl-for-http-requests-db3249c5d4e6 feature image

How to Easily use cURL for HTTP Requests

November 21, 2018

/clojure-immutable-and-persistent-data-structures-3978118f6805 feature image

Clojure Immutable and Persistent Data Structures

Abhishek Amralkar

Abhishek Amralkar

November 21, 2018

/what-is-serverless-part-2-challenges-and-considerations-for-choosing-the-right-serverless-58c830061db8 feature image

What is Serverless — Part 2: Challenges and Considerations for Choosing the Right Serverless…

Vamsi Chemitiganti

Vamsi Chemitiganti

November 21, 2018

/what-is-serverless-and-what-it-means-for-you-part-1-d541329172c8 feature image

What is Serverless and What it Means for You — Part 1

Vamsi Chemitiganti

Vamsi Chemitiganti

November 21, 2018

Stories Published in 2017

/what-on-earth-is-a-smart-contract-2c82e5d89d26 feature image

What on earth is a smart contract?

November 21, 2017

/blockchain-token-as-a-license-taal-ba5d173e4ad6 feature image

Blockchain: Token as a License (TaaL)

Denis Petrovcic

Denis Petrovcic

November 21, 2017

/why-were-introducing-the-theta-token-blockchain-to-revolutionize-video-delivery-d8725c47b62 feature image

Why We’re Introducing the Theta Token & Blockchain to Revolutionize Video Delivery

November 21, 2017

/how-to-develop-a-robust-algorithm-c38e08f32201 feature image

#MACHINE-LEARNING

Boosting and Bagging: How To Develop A Robust Machine Learning Algorithm

November 21, 2017

/investment-case-for-the-best-cryptocurrencies-6357866ea133 feature image

Why We Need Bitcoin

Paul Payam Almasi

Paul Payam Almasi

November 21, 2017

/from-callbacks-to-async-await-25331b7f73 feature image

From callbacks to async/await

November 21, 2017

/they-lied-its-not-a-sprint-b3ce3a939b7b feature image

They Lied — It’s Not a Sprint

November 21, 2017

/relational-versus-non-relational-database-d5d1c439fb86 feature image

Relational versus Non Relational Database

November 21, 2017

/all-tech-is-human-b5f8f736c79b feature image

All Tech Is Human

David Ryan Polgar

David Ryan Polgar

November 21, 2017

Stories Published in 2016

/why-we-struggle-to-set-aside-time-for-personal-growth-work-33bd089b33bc feature image

Why We Struggle To Set Aside Time For Personal Growth Work

Poornima Vijayashanker

Poornima Vijayashanker

November 21, 2016

/modrun-java-classloading-made-easy-1dfd0d64f780 feature image

ModRun: Java Classloading Made Easy

November 21, 2016

/startupselfie-at-websummit-6d76cca2eead feature image

#StartUpSelfie at #WebSummit

Storytelling 4 Startups - Nina Nikolikj

Storytelling 4 Startups - Nina Nikolikj

November 21, 2016

/web-summit-trump-tech-news-opinions-and-solutions-d45eddeb7ae2 feature image

Web Summit, Trump, tech, news, opinions and solutions

Chris Chinchilla

Chris Chinchilla

November 21, 2016

/some-of-my-favorite-books-in-2016-7497ab6a8012 feature image

Some of My Favorite Books in 2016

November 21, 2016

/another-look-at-elixirs-with-cbd70ccd8ba4 feature image

Another look at Elixir’s With

November 21, 2016

/finding-the-genre-of-a-song-with-deep-learning-da8f59a61194 feature image

#ARTIFICIAL-INTELLIGENCE

Finding the genre of a song with Deep Learning — A.I. Odyssey part. 1

November 21, 2016

/the-one-and-only-java-tool-shipped-without-a-jar-21594ebe366f feature image

The one and only Java tool shipped without a jar

November 21, 2016

/whats-right-for-my-accelerator-aad8da919248 feature image

#VENTURE-CAPITAL

What’s Right for My Accelerator?

November 21, 2016

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