医学物理学General Review a.ppt

(1) write the original cubic volume (a[0]*b[0]*L[0]) (2) write the new cubic volume (a[0]-da)*(b[0]- db)*(L[0]-dL));(3) write the equation by making the new volume be equal to the original volume (4) set da/a[0] = db/b[0] = y, dL/L = x and substitute these into (3) and you will get an equation about y and x. (5) find x from the new equation (6) find mu: = y/x while y approaches to zero and you will get μ=1/2 Please show me your result.;General Review 2;Chapter 5 Relativity;This explains that Newton’s mechanical laws are identical in all inertia reference frames.;Lorentz transformation;2. Time dilation (时间延迟, 时间膨胀);3. Lorentz contraction (洛伦兹收缩）;4. Relativistic Mechanics;4.2 Force and kinetic energy;4.3 Mass-energy relation;5. the characteristics of space-time in gravitational field;Chapter 6. The surface phenomenon of liquid;3. The pressure formula of ideal gases;4. The energy formula of ideal gases;(2). Doltan law;2. Surface energy (表面能);6.4 Capillarity (毛细管现象) and air `embolism (栓塞);?;Chapter 7 Geometric Optics;4. the equation of single spherical surface;5. Definition of focus and focal distance;6. Thin lenses;u is positive if the object is on the side of the lens from which light is coming; v is positive if the image is on the side of the lens to which the light going; f is positive for converging lens. ;7. Systems of two lenses;8. Corrective eyeglasses for visual defects;Chapter 8 Wave Optics;For bright fringes:; So for dark fringes:; Interference in thin films; air wedge;In a word, ;2. Diffraction (衍射) of light;; Diffraction by a circular hole; diffraction grating equation (bright fringes) is d sinθ = ±mλ