Why was quantum mechanics invented?

Answer 1

Quantum Mechanics is one of the three branches of Modern Physics, being the other two, Classical Mechanics and Relativist Mechanics.

Quantum Mechanics is needed to learn the intimate behavior of the smallest particles existent: subatomic particles. It deals with the interaction amongst, the forms of energy they receive and deliver, and the way they emit energy, a way done in packets, or quanta, also called photons.

Quantum Mechanics is one of the base knowledges for the design of modern electronics.

Answer 2

Quantum mechanics is extremely useful. Due to classical mechanics, every electron in every atom should be over come by the nucleus' gravity and implode almost immediately. However, quantum mechanics gives special properties to electrons. Sometimes, they are described as waves, not particles. When two waves get too close to one another, they cancel each other out. Therefore, the electrons stop moving toward one another.

Basically, Quantum Mechanics gives us a complex yet understandable reason why atoms don't implode.

Answer 3

Quantum mechanics gives us a picture of the world that is counterintuitive to classical thought. It has changed our perspective on reality itself, raising profound questions about concepts such as cause and effect, measurement, and information. Despite its seemingly mysterious nature, quantum mechanics has a broad range of applications in fields such as chemistry, computer science, and cryptography. It also plays an fundamental role in the development of new technologies, including lasers, transistors, microscopes, semiconductors, and computer chips.

Answer 4

The significance of QM in chemistry (quantum chemistry) is that it explains, in terms of electron energy levels, the behaviour of the different chemical elements at the quantum level, taking into account the wavelike properties of the electrons using Schrodinger equation to calculate those properties.

Answer 5

Without quantum theory, we could not have developed many items that are the foundation of our modern world: transistors (from which we get useful computers and thus the internet), lasers (used in optical communication), and LEDs; just for starters.

Answer 6

Without quantum mechanics, understanding solid state physics becomes impossible. No solid state physics, no transistors. No transistors, no computers smaller than a gymnasium, and none fast enough to do even word processing. No small and fast computers, no internet. No internet, no Answers.com.

It all depends on quantum mechanics.

Answer 7

Predicting molecule structure, reactivity and spectra.

Answer 8

To study the microscopic world as classical mechanics failed to govern the states of matter in this level.

Answer 9

It defines atomic interactions.