41. In this way, reflectivities of up to ~ 50 % can be attained. 42. Shortly thereafter, the storm made reflectivity along the western periphery of the hurricane. 43. A more complex calibration is a full 2-port reflectivity and transmission calibration. 44. The amplitude modulation comes from moving surfaces of different reflectivity and angle of reflection. 45. CD-R and friends use a dye that changes its reflectivity when heated. 46. Is there a correlation between the light reflectivity and heat reflectivity of an object? 47. Is there a correlation between the light reflectivity and heat reflectivity of an object? 48. Soot decreases the reflectivity , or albedo of ice, increasing absorption of heat. 49. Following the modes through one round trip, the reflectivity solution can be attained. 50. Later he expanded his interest to optical photons between mirrors of highest possible reflectivity .