Technology

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1820 episodes Page 17 of 91

#5128: The 120 Hz Problem: Why Your Window Can't Stop That Jackhammer

A bedroom-shattering 120 Hz tone reveals why low-frequency noise ignores windows, mocks active noise cancellation, and demands real physics.

audio-engineeringsignal-processingsound-transmission

#5127: Brushless vs Brushed Motors: What You're Really Paying For

Carbon blocks, copper windings, and a controller that changes everything. Here's what "brushless" actually means on your tools.

hardware-engineeringelectrical-engineeringmechanical-engineering

#5125: Why Your Cordless Tool Dies While Plugged In

Power path management explained — why your Dremel can't charge and run at the same time, and what it would take to fix it.

battery-technologyhardware-engineeringelectrical-engineering

#5124: Sharpening, Cleaning & Polishing with a Rotary Tool

Can a Dremel really sharpen a knife? What about drill bits? We break down which accessories work and which are a waste.

diyhardware-engineeringmaterial-science

#5123: Who Gets to Call Themselves an Artist?

Creative rivalry in couples, engraver vs. painter status, and who decides what counts as art.

neurodivergenceengraving-hierarchyart-history

#5122: Why a Private Jet Costs $200K (And Who Pays It)

A Tel Aviv to Hartford charter quote explained: positioning, fuel, fees, and the real math behind private aviation.

aviation-technologylogisticsprivate-aviation

#5120: Why Ground Rumble Ignores Your Acoustic Windows

Acoustic windows can't stop low-frequency rumble traveling through soil. Can wave barriers or base isolation actually work between city buildings?

structural-engineeringurban-planningstructure-borne-vibration

#5118: Model Identity Fraud: Distillation or Data Contamination?

When AI models lie about who they are, is it stolen knowledge or just contaminated training data?

large-language-modelsai-trainingdata-integrity

#5117: How AI Training Data Gets Filtered (and Exploited)

Six stages of content filtering stand between raw web crawls and your AI model — here's where poisoning attacks slip through.

training-datadata-integrityai-safety

#5116: Beyond Common Crawl: The Datasets Shaping AI

Common Crawl is just the bulk flour. We explore the curated datasets that actually shape what AI models know and do.

training-datafine-tuningknowledge-updates

#5114: Concrete Screws vs Drywall Anchors: What Actually Works

Concrete screws need pilot holes—here's why, plus how to match bits, avoid rebar, and pick the right anchor for drywall.

hardware-engineeringdiystructural-engineering

#5112: AC vs. DC: What Actually Happens When You Get Shocked?

Voltage isn't what kills you. Current is. Here's what really happens when AC meets the human body.

electrical-engineeringhome-safetyhardware-reliability

#5110: Carabiner Load Ratings: What Can They Really Hold?

Carabiners are stronger than you think—but the real risk isn't the hook breaking. We break down load ratings, gate design, and trust.

hardware-engineeringstructural-engineeringergonomics

#5108: How to Identify Anything in the Sky: A Jerusalem Drone Case Study

A reader saw a green strobe hovering over Jerusalem. Here's how to think like an educated guesser.

aviation-technologysituational-awarenesssignal-processing

#5107: The Wearable Power Grid: Smart or Just Early?

Is a distributed belt-mounted power system the future of EDC, or just a clever fantasy? We dig into the engineering.

battery-technologyfault-tolerancehardware-engineering

#5106: Why a Jackhammer Still Wins Against Acoustic Windows

A quiet room isn't quiet when the noise travels through the building itself. We break down why acoustic windows fail against low-frequency percussion.

audio-engineeringflanking-pathsstructure-borne-vibration

#5101: Drill Bits and Concrete: What Actually Worked

A 12V drill, a $20 bit set, and a reinforced safe room wall — what actually happened, and why the first bit failed.

hardware-engineeringmaterial-sciencediy

#5097: Who Actually Gets Paid to Test Hardware?

Real testing vs. affiliate content — and whether AI can finally separate genuine reviews from the noise.

hardware-engineeringai-safetyproduct-testing

#5096: Vacuum Engineering: When Industrial Machines Beat Consumer Gear

Why a $500 Bosch industrial vacuum outperforms a $700 Dyson — and what happens when you take construction-site gear home.

hardware-engineeringindustrial-automationvacuum-engineering

#5095: Airline Food Factories: Inside the 24-Hour Cold Chain

Giant plants, 800-liter kettles, and recipe engineers — how 50,000 meals a day get from factory floor to 35,000 feet.

supply-chainlogisticsindustrial-automation