INDEX rest mass

Several authors [10] studied the propagation of light in a Maxwell vacuum with small nonzero conductivity and complex refractive index. By solving modified Maxwell equations, one can get the frequency-dependent speed of light, which can be associated with nonzero mass of photon. The nonzero rest mass of photon has a long history, and the astrophysical evidence is discussed in this chapter. 

A 38-year-old man with a family history of cardiovascular and cerebrovascular disease makes an appointment for a routine physical examination with a physician he has not seen before. He explains that his father died young of a heart attack and that two paternal uncles have suffered strokes in their late 40s. Physical examination reveals yellowish lumps on his eyelids (xanthelasmas, which are often associated with a lipid disorder) and a resting blood pressure of 186/95 mm Hg. There is some excess visceral fat, and his body mass index calculates to 26.5. Total serum cholesterol (476 mg/dL) and triglycerides (288 mg/dL) are elevated and subsequent angiography reveals atherosclerotic restrictions of at least two coronary arteries. 

---