Now please raise your eyes, put your fingers in front of you and get close to your glasses. We will find that if you focus on your fingers at this time, anything in the distance will become blurred. But if we extend this distance, the focus will have two shadows, but you can do well. Switch between two or three points you are looking for.
Wind speed and direction are usually not considered in shooting (sniper, long-range shooting, no discussion), but this factor must be considered in archery.
There are two main difficulties in binocular photography:
1。 How to find three matching points in two or three shadows (so-called three points and one line)
2。 Focusing back and forth will cause eye fatigue and affect stability.
dizzy
However, if the above three effects can be eliminated, binocular aiming is encouraged.
Why are eyes encouraged to aim?
Most importantly, the stability and rhythm of shooting is the most critical (everyone's breathing and heartbeat will inevitably cause slight vibration of the body), requiring the body to "stand still" when pulling the trigger.
We try to close one eye and stare at a point, which will soon cause muscle tension around the eyes closed!
This is why Olympic shooters always learn from pirates (haha, just answered a question about pirates) and then blindfold them to avoid these influences. Physical and mental health is the foundation of college students' success. The physical and mental health level of college students is directly related to the health level and scientific and technological benefits of future high-tech teams. For a long time, people only understand physical and mental health as physical health, while ignoring mental health for a long time. According to the characteristics of sports and the psychological state of college students in sports activities, this paper discusses the influence and function of sports on college students' physical and mental health. Mao Zedong once said that "the body is the capital of revolution", and Voltaire, a French enlightenment thinker, put forward the motto that "life lies in movement" long ago. We can see how important a strong body is to a person. A strong body comes from physical exercise. In a word, physical exercise is of great significance to all of us, especially to college students.
College students are a special group. We often neglect physical exercise because we are busy with heavy study and other things. Besides, our normal study and life also make it impossible for us to exercise for a long time. Therefore, we need more physical exercise to strengthen our bodies.