Don't talk about scientific knowledge that you don't know

Don't talk about scientific knowledge that you don't know: Light speed: The fastest speed in the universe is about 299792458 meters per second. The speed of light was measured using the Michelson-Morley experiment. 2. Speed of sound: The speed of sound through the air is about 340 meters per second. The speed of sound was measured using a sound wave velocimeter. 3. Atomic structure: The atomic structure is the basic structure of matter, consisting of atomic nuclei and electrons. The nucleus of an atom was made up of neutrons and neutrons. Electrons moved around the nucleus. Quantum mechanics: Quantum mechanics is a physics theory that describes the behavior of microscopic particles. The development of quantum mechanics originated from the experimental discoveries of quantum mechanics in the early 20th century. Black hole: Black hole is an extremely dense celestial body with extremely strong gravity. Even light cannot escape its gravitational field. The formation of black holes was caused by huge masses or extremely dense gravitational fields. Cosmic expansion: Cosmic expansion refers to the accelerated expansion of matter in the universe, causing the distance between galaxies to become farther and farther. The acceleration of the expansion of the universe may be due to the existence of dark energy in the universe. Cosmic microwave background radiation: Cosmic microwave background radiation is the radiation emitted by the early universe and is still spreading. The discovery of the cosmic microwave background radiation provided strong support for the Big Bang theory of cosmos. Quantum entanglement: Quantum entanglement is a phenomenon where the states of two or more particles are interconnected, no matter how far apart they are. This connection could be measured and verified through quantum entanglement experiments.