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Cars

Tire pressure: the right value and the right timing

The correct pressure is determined according to the vehicle and load. Measuring cold tyres and distinguishing between recommended and maximum value are essential parts of the inspection...

Published22 Oct 2026
Cars

Air resistance: why speed changes consumption

Aerodynamic resistance depends on speed relative to air, shape and size. The Cd factor is useful, but it does not describe all the force on the car itself.

Published22 Oct 2026
Cars

The plug-in hybrid: why the charging habit matters

PHEV combines electric motion with an internal combustion engine and the possibility of external charging. The benefit of this combination depends on the route, charging and specific co...

Published22 Oct 2026
Cars

Hybrid cars: where an HEV gets its energy

The hybrid without external charging combines an internal combustion engine, electric drive and battery. The recuperation and management of the system explain its utility more precisely...

Published22 Oct 2026
Technology

WebP: how compression changes the size of images

WebP supports compression with and without loss, transparency and animation. The real benefit depends on the image and settings, so the size should be evaluated along with the quality.

Published22 Oct 2026
Technology

QR codes: data, the quiet zone and error correction

QR code is a two-dimensional data symbol. Its successful reading depends on both the content and the size of the modules, the free space, and the correction level selected.

Published22 Oct 2026
Technology

DNS: how a site's name leads to its server

DNS connects domains with information about network services. Various records, authoritative servers, and caches explain why the change of hosting is not visible to all visitors at the...

Published22 Oct 2026