Gravitas is one of the virtues emphasized among ancient Romans. It means seriousness, responsibility, dignity, and so on. It is also the origin of the word gravity, one of the forces we articulate in the field of physics as we feel it physically in our everyday life as a sense of weight and heaviness. As … Continue reading Gravitas
Tag: #Physics
Pebbles
Let's look at things around you. What can you see? If you stay in the living room, you could find items like a sofa, a small table, books, magazines, picture frames on the wall, and the like. If it is in the morning, you have breakfast, and there are things as a cup of coffee, … Continue reading Pebbles
Let There Be Light
The concept of spacetime tells us that both space and time are the same. One typical example is that the age of the universe is the edge of the universe. As it takes time for light to travel from one place to another, what we see at present, strictly speaking, should be what happened in … Continue reading Let There Be Light
Minkowski’s Spacetime
Einstein's theory of relativity tells us that we live in a sort of spacetime continuum. The cosmos we recognize is not only a spatial entity but also a time sequence that contains itself. We can easily understand such "reality" with a few thought experiments. For example, the sunlight we see right now is not the … Continue reading Minkowski’s Spacetime
Thy Sight Alone
Thinking of the entire universe makes us feel a sense of awe and wonder. We used to believe that the planet Earth was the whole world that we could imagine. It was, however, only the beginning of how we observe the cosmos. We now know that Earth is the only third planet from the Sun, … Continue reading Thy Sight Alone
Thereof One Must be Silent
There are Buddha's teachings on healthy skepticism. Since the days of the Buddha, people have quickly fallen into the so-called blind faith. That is far from the authentic faith derived from a humble realization of our cognitive limitations. At the moment in our lives, we would inevitably encounter the situation that we can't do anything … Continue reading Thereof One Must be Silent
The Waves of Life
Since the Big Bang, the beginning of the cosmos, the fundamental basis of every existence has been "spacetime." In physics, it’s the gravitational continuum that makes the universe substantial. Such spacetime makes everything exist; and, everything has the beginning and end. Without spacetime, we never have asked such questions as when, where, and what. There … Continue reading The Waves of Life
Tom’s Blog 