The litre figure on a Korean refrigerator is effective internal volume, and the efficiency grade is scored relative to that volume. In public filings, a 299L Grade 1 unit drew 4.9 kWh less per month than a 253L Grade 2 unit.
The X prefix on a Core Ultra laptop chip refers to graphics, not cores. Every Core Ultra Series 3 part shares the same 25W base TDP — and the number that actually decides sustained performance appears nowhere in the name.
A projector labeled 8,000 lumens measured 251 lux while a 200 ANSI-lumen model hit 477 lux. What ANSI lumens actually measure, why plain lumen ratings cannot be compared, and how many lumens each screen size needs.
Pascals measure vacuum pressure, not suction power. In Korean Consumer Agency testing, six vacuums advertised at 18,000–48,000Pa delivered just 58–160W, and only three of ten products met their stated figures.
The cabin limit for power banks is 160Wh, roughly 43,000mAh. Since 20 April 2026 it is two units per passenger, and in-flight charging is banned. Here is the mAh-to-Wh maths behind it.
The wattage printed on a charger is a ceiling. USB PD fixes a maximum for each voltage step, going past 100W requires a separately certified 240W cable, and a 65W three-port charger drops its main port to 35W once every socket is in use.
The power and water figures on a washing machine label are per cycle. At five washes a week you multiply by 260. A 100Wh difference per cycle costs 5,580 won a year; 20 litres costs 6,396 won.
The 200,000-fold rating on a foldable spec sheet works out to about 5.5 years at 100 open-close cycles a day. Here is what UTG thickness, 1.4R curvature and an IPX8 rating each actually guarantee.
U3 and V30 on the same card mean the same thing — 30 MB/s minimum write, written in two different standards. A 340 Mbps 4K stream needs 42.5 MB/s. Here is the class table and the bitrate math.
The 256GB launch prices of the Galaxy Z Fold8 and Fold8 Ultra differ by 299,200 won. Converting the published specs shows where that money went — and it is not the main display.