1. The sunshine in winter is warm and comfortable, not as dazzling as the sunshine in summer. Just as my mother touched me gently with her hand, the warmth filled my whole body.

It was a shining blue sky washed by water. All the plants are very lush, and their branches and leaves shine with pleasant light in the sun.

3. Through your light, I saw a brand-new and better world; I also like you to make yourself a better person.

Small candlelight, they are beating and burning themselves, just like a little warm light, gathering into the power of spring.

Data expansion:

Light is a physical term, and its essence is photon flow in a specific frequency band. The light source emits light because the electrons in the light source gain extra energy. If the energy is not enough to make it jump into outer orbit, the electrons will accelerate and release energy in the form of waves.

If the transition just fills the vacancy in the orbit and reaches the stable state from the excited state, the electron will stop the transition. Otherwise, the electrons will jump back to the previous orbit again and release energy in the form of waves.

Research background:

The research history of light, like mechanics, was paid attention to in ancient Greece, and the law of light reflection was widely known as early as Euclid's time. However, before the separation of natural science and religion, human understanding of the nature of light hardly improved, only staying at the level of formal understanding of the spread and application of light. In the17th century, there were two voices on this issue: wave theory and particle theory.

1925, French physicist de Broglie put forward the theory that all matter has wave-particle duality, that is, all objects are both waves and particles. Then the famous German physicist Planck and other scientists established the theory of quantum physics, which completely expanded the human understanding of the nature of matter.

To sum up, the essence of light should be considered as photon with wave-particle duality. But the meaning of wave here is not mechanical waves like sound waves and water waves, but statistical waves, that is to say, the behavior of a large number of photons reflects the nature of waves. At the same time, light has dynamic mass, and its mass can be calculated according to Einstein's mass-energy equation.