原子核物理学

Another big breakthrough in physics this century concerns the atomic nucleus.

近代物理学上另一个大的突破在於原子核的研究。

People through nuclear reactions, have been synthesized 17 kinds of atomic number greater than 92 of the transuranic elements, and thousands of The new kinds of radioactive nuclides, and by high-energy and ultra-high energy-ray beam and the interaction of atomic nuclei and found hundreds of kinds of short-lived particles, namely, baryon, meson, lepton, and particle resonance states of these particles has led to a new field of study - the birth of particle physics since the age of .70, nuclear physics has entered a deep development and wide application of new, more mature stage, on the one hand the development of particle acceleration and detection techniques, expanding people's research in nuclear means, the other hand, nuclear technology to serve the national economy, for example, for the development and utilization of nuclear energy to provide more accurate nuclear data; the use of isotope tracer technique diagnosis and treatment of disease; the use of radiation and irradiation preservation of food, irradiation breeding .

人们通过核反应，已经人工合成了17种原子序数大于92的超铀元素和上千种新的放射性核素，并且通过高能和超高能射线束和原子核的相互作用，发现了上百种短寿命粒子、即重子、介子、轻子和共振态粒子，对这些粒子的研究导致了一门新学科——粒子物理学的诞生。70年代以来，核物理进入了纵深发展和广泛应用的新的更成熟的阶段，一方面发展粒子的加速技术和探测技术，扩充人们研究原子核的手段，另一方面将核技术服务于国民经济中，例如，为核能的开发利用提供更为准确的核数据；利用同位素示踪技术诊断和治疗疾病；利用射线及辐照技术保存食品、辐照育种等。

This class will study some of the changing ideas within modern physics, ranging from relativity theory and quantum mechanics to solid-state physics, nuclear and elementary particles, and cosmology.

本课程将会研究现代物理学中在概念上的变迁，从相对论、量子力学到固态物理、原子核与基本粒子、还有宇宙论。

A view popular in physics is to start with uncharged electrons and cores, which are therefore both free and plane waves and can have any energy, and then fade in the charge.

物理学中流行的方法是从不带电的电子和原子核出发，因为它们是自由的平面波，可以具有任意能量，并在带电后衰减。

This covers almost the whole of extranuclear physics and most of nuclear physics , too.

这就包括了几乎全部核外物理学，也包括了大部分原子核物理学的范围。

Nuclear Physics 1930, the Star of energy will be satisfied with the solution to the rapid development of the internal structure of stars; Hours map and based on the experimental results, the establishment of a stellar evolution of scientific theory. Einstein's general theory of relativity, in 1917 by the structure of the universe, the establishment of a relativistic cosmology. In 1929 the Hubble Space Telescope found redshifts and distances of the future, relations between the people of the gravitational theory of general relativity River from the data objects, size and structure of the material movement and the formation of modern cosmology.

三十年代原子核物理学的发展﹐使恒星能源的疑问获得满意的解决﹐从而使恒星内部结构理论迅速发展﹔并且依据赫罗图的实测结果﹐确立了恒星演化的科学理论。1917年爱因斯坦用广义相对论分析宇宙的结构﹐创立了相对论宇宙学。1929年哈勃发现了河外星系的谱线红移与距离间的关系﹐以后人们利用广义相对论的引力理论来分析有关河外天体的观测资料﹐探索大尺度上的物质结构和运动﹐这就形成了现代宇宙学。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。