3. Why do we say that light is an electromagnetic wave? Describe the relationship among wavelength, frequency, and speed for light. 4. What is a photon? In what way is a photon like a particle? In what way is it like a wave? 5. List the different forms of light in order from lowest to highest energy. Is the order the same from lowest to highest frequency?
Serum: Plasma: 1: Serum is the undiluted, extracellular portion of blood after adequate coagulation is complete. Plasma is a clear, straw-colored watery portion of the blood in which several types of blood cells are suspended. 2: Serum is part of blood which lack clotting factor. Plasma is composed of serum and clotting factor. 3
They're also the prized attributes of skin care serums -- light, fast-absorbing liquids used as an alternative or in addition to creams or lotions. The biggest difference between a serum and a cream or lotion is what the formulation doesn't include.