Physics is Essential
Executive Summary about Physics by Carl Hepburn
The status of physics is the subject of great concern. Why is physics important?
Blackbody radiation is the spectrum of light emitted by a perfectly absorbing object when it is heated. At higher frequencies, the radiation had to be emitted in bigger chunks. Light incident on the surface of a metal was able to eject electrons from the surface of a metal.
If light were a wave as experiments had shown, then the energy contained in the wave increased with its amplitude. For ultra-violet light, the number of electrons reduced but it was always possible for the light to eject an electron. But if red light were used, the light was not able to eject any electrons from the surface of the metal and it didn’t matter how intense the light was.
The frequency of blue light is greater than that of red light and therefore it has more energy; the blue light has enough energy to knock the electrons from the metal atoms. Since increasing the intensity is just increasing the number of photons incident on the surface of the metal, red light, no matter how intense, will have enough energy to dislodge electrons from the surface. Discoveries in physics are essential to create advances in technology.
Physical Education in Our Schools
Executive Summary about Physics by Carl Hepburn Kathy Crawford
Physical Education is a vital part of our public education system. Physical education should be an integral part of the total education of every child in Kindergarten through Grade 12.
Recognizing the importance of physical education at a young age promotes healthy habits throughout life. Schools should also recognize the importance of physical education.
One significant area of concern is the decrease in the physical activity of youth and of physical education in schools. Teaching physical education and play are as crucial to a child’s development as any academic endeavor. Teaching physical education majors study the effects of physical activity on the body and mind, especially in the development of young people.
Physical education is a supremely important component of a child’s development. Physical Education is an important aspect of a total education. Physical education is key to improving a child’s confidence, brainpower and long-term health. Quality physical education should be provided to all students as an integral part of K-12 education.
