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433 quick stories on the rack · Tech
7 min

How Game Engines Fake Volumetric Light Beams

Game engines use clever shortcuts to fake god rays and light shafts. Here's exactly how they decide what to ca…

SISana Iqbal↗
5 min

Haptic Feedback Is Slowly Killing Your Phone's Motor

Constant keyboard vibrations degrade your haptic motor faster than almost anything else. The mechanical reason…

SISana Iqbal↗
6 min

Why Smartphone Cameras Produce Uneven Sharpness

Same scene, two taps, two different results. The real reason comes down to four compounding variables inside y…

LPLeo Park↗
7 min

Why Your Phone Clock Drifts on Wi-Fi vs Cellular

Your phone hits the same time servers on Wi-Fi and cellular, yet clocks drift differently. It comes down to ho…

SISana Iqbal↗
4 min

How Game Engines Decide Which NPCs to Simulate

Game crowds use a layered LOD system to fake thousands of characters without melting your GPU. The seams are i…

LPLeo Park↗
4 min

Why Decoding Audio Burns More CPU Than Encoding

Same bitrate, opposite jobs, yet decoding audio quietly burns more processor cycles than encoding. The reason …

SISana Iqbal↗
6 min

Why Pausing a Stream Triggers Buffering

Pausing flushes pre-loaded video data and stales your bandwidth estimate. The spinner on resume is a feature o…

SISana Iqbal↗
4 min

Push Notifications Still Reach Killed Apps

One always-on OS daemon handles every notification, so killing an app changes nothing. The full delivery chain…

LPLeo Park↗
5 min

Why Smartphone Lenses Render Skin Tones Differently

Switch from wide to ultrawide and skin tones shift. The optical and software reasons two lenses on the same ph…

LPLeo Park↗
6 min

Why Phone Speakers Distort Before Max Volume

Phone speakers crack up well before the volume slider tops out. The physics of tiny drivers, bad spec sheets, …

SISana Iqbal↗
6 min

Why Touchscreens Pick One Finger Over Another

Touchscreens don't freeze when two fingers land at once, they run a layered triage system. The logic behind it…

LPLeo Park↗
5 min

Why Phone Camera Shadows Look Worse Than Midtones

Same ISO, same photo, but shadows fall apart while midtones stay clean. Sensor physics explains the gap, and w…

LPLeo Park↗