Feel Free to Ask Questions!
Tel : +8615850513534
E-mail : apply@acasc.cn
At present, GZU has a full-time enrollment of 44588 undergraduates, 7233 postgraduates, 9415 adult students, and 291 international students. Among the staff of 4198, there are 2530 full-time teachers, including 381 PhD owners, 1083 Master degree owners, 3
Find more information on the university websiteApplying through ACASC generally takes a few minutes to complete. It takes 5 steps to complete the application.
1. Click “Apply Now” button at the top of the page.
2. Fill in online application form.
3. Upload required documents.
4. Pay the application fee and the ACASC service fee
5. Click “Submit” button.
Important notice: In order to apply, you need to create an account with ACASC.
Optics is the branch of physics which involves the behavior and properties of light, including its interactions with matter and the construction of instruments that use or detect it. Optics usually describes the behavior of visible, ultraviolet, and infrared light. Because light is an electromagnetic wave, other forms of electromagnetic radiation such as X-rays, microwaves, and radio waves exhibit similar properties.
Most optical phenomena can be accounted for using the classical electromagnetic description of light. Complete electromagnetic descriptions of light are, however, often difficult to apply in practice. Practical optics is usually done using simplified models. The most common of these, geometric optics, treats light as a collection of rays that travel in straight lines and bend when they pass through or reflect from surfaces. Physical optics is a more comprehensive model of light, which includes wave effects such as diffraction and interference that cannot be accounted for in geometric optics. Historically, the ray-based model of light was developed first, followed by the wave model of light. Progress in electromagnetic theory in the 19th century led to the discovery that light waves were, in fact, electromagnetic radiation.
Some phenomena depend on the fact that light has both wave-like and particle-like properties. Explanation of these effects requires quantum mechanics. When considering light's particle-like properties, the light is modeled as a collection of particles called "photons". Quantum optics deals with the application of quantum mechanics to optical systems.