Tag: science & technology

Bjarne Stroustrup developed C++ (originally named 'C with Classes') in 1979 at Bell Labs. He designed it as an extension of the C language to add object-oriented features while maintaining C's efficiency.

Java was created by James Gosling at Sun Microsystems in 1995, originally called 'Oak' and then 'Green' before being named Java. Gosling developed the language as a platform-independent code for consumer devices. David Gelernter is known for work on parallel computing and tuple spaces.

Perl was created by Larry Wall in 1987 as a scripting language for text processing and system administration on Unix systems. Wall developed it originally for report processing on bug-reporting systems. Konrad Zuse was a German computer pioneer who built the first programmable computer.

Linus Torvalds created the Linux kernel in 1991 as a student at the University of Helsinki. Yukihiro Matsumoto created Ruby. M. Benveniste and J.R. Cordy are not associated with major programming language creation. Linux began as a personal project before becoming the foundation of the open-source operating system.

Internal combustion engines burn fuel inside a combustion chamber within the engine, unlike external combustion engines (like steam engines) where combustion occurs outside. The combustion chamber is where the fuel-air mixture ignites and expands.

The four-stroke cycle sequence is: 1) Intake (fuel-air mixture enters), 2) Compression (mixture is compressed), 3) Power stroke (combustion and expansion), 4) Exhaust (gases expelled). This is the standard Otto cycle used in most gasoline engines.

Combustion is an exothermic chemical process - it releases heat energy. In internal combustion engines, this released energy creates pressure that drives pistons. Endothermic processes absorb heat, isothermic processes maintain constant temperature, and isobaric processes maintain constant pressure.

A two-stroke engine completes the intake, compression, power, and exhaust phases in just two movements of the piston (one up and one down stroke), producing one power stroke every two strokes. This is different from four-stroke engines which need four strokes for one power stroke.

A four-stroke engine needs four complete piston movements (intake, compression, power, and exhaust) to produce one power stroke. This is why it's called a "four-stroke" or "four-cycle" engine.

The TVS Scooty Pep+ is a 75cc gearless scooter targeted at the youth segment. It was positioned as a lightweight, stylish commuter scooter. The 100cc, 125cc, and 150cc options are too large for this particular model, which was designed for easy maneuverability and fuel efficiency.