# Speed of Light

The speed of light being a constant sounds like a simple statement. But there is more to it, quite a bit more. Let’s look at what this constancy really means. 一見したところで, it says that if you are standing somewhere, and there is a ray of light going from your right to left, it has a speed C言語. And another ray of light going from left to right also has a speed C言語. So far, so good. Now let’s say you are in a rocket ship, 次の図に示すように、, moving from right to left.

# Quantum Mechanics – Interpretations

Whenever we talk about Quantum Mechanics, one of the first questions would be, “What about the cat?” This question, 本当に, is about the interpretations of Quantum Mechanics. The standard interpretation, the so-called Copenhagen interpretation, leads to the famous Schrodinger’s cat.

# Quantum Field Theory

In this post on Quantum Mechanics (QM), we will go a bit beyond it and touch upon Quantum Field Theory – the way it is used in particle physics. In the last couple of posts, I outlined a philosophical introduction to QM, as well as its historical origin – how it came about as an ad-hoc explanation of the blackbody radiation, and a brilliant description of the photoelectric effect.

# Historical Origin of Quantum Mechanics

このセクションでは、, we will try to look at the historical origin of Quantum Mechanics, which is usually presented succinctly using scary looking mathematical formulas. The role of mathematics in physics, as Richard Feynman explains (in his lectures on QED given in Auckland, New Zealand in 1979, available on YouTube, but as poor quality recordings) is purely utilitarian.

# Classical Physics

The main difficulty in describing particle physics to general public is the fact that it is built on modern physics. Even if you are physics aficionado and did extremely well in your high school physics, what you have learned and loved is classical physics. The difference between classical physics and modern physics is not just more physics, but a completely new way of looking at the reality around us.

# 還元主義

すべての私達の科学的な努力で, 私たちは物事を理解し、研究するために類似した高レベルの技術を使用します. 最も一般的な技術は、還元主義であります. それは、行動、その信念に基づいています, 大規模で複雑なオブジェクトの特性および構造はその単純な構成要素の観点から理解することができます. 言い換えると, 我々は全体を理解しよう (宇宙, 例えば) 小さい方の面で, 減少成分 (そのような粒子として).

# Sensory and Physical Worlds

Animals have different sensory capabilities compared to us humans. Cats, 例えば, can hear up to 60kHz, while the highest note we have ever heard was about 20kHz. 明らかに, we could hear that high a note only in our childhood. そう, if we are trying to pull a fast one on a cat with the best hifi multi-channel, Dolby-whatever recording of a mouse, we will fail pathetically. It won&#8217;t be fooled because it lives in a different sensory world, while sharing the same physical world as ours. There is a humongous difference between the sensory and physical worlds.