1 Rinse the mustard greens in water and drain. 2  Trim the stems of the greens and chop, if desired. 3  Place the greens in a skillet over low heat and cover. 4  Steam for 4 to 6 minutes or until the mustard greens are wilted, stirring occasionally so they do not stick to the pan. Rinse the mustard greens in cold water, drain and chop them up. 2  Place a skillet on medium heat and pour 2 to 5 tbsp. ( 3 29.58 to 73.95 ml) (in relation to the amount of mustard greens) of water or broth into the pan.
Electrostatic lens. An electrostatic lens is a device that assists in the transport of charged particles.[1][2][3] For instance, it can guide electrons emitted from a sample to an electron analyzer, analogous to the way an optical lens assists in the transport of light in an optical instrument.
An experimental setup for studying the photoelectric effect is depicted in Fig. 1. Fig. 1: Principal setup for the photoelectric effect A potential difference is applied between two metallic electrodes mounted inside an evacuated glass tube. When the electrode connected to the negative terminal of the potential difference is irradiated with ultraviolet light, electrons are ejected from the electrode.