ESB End Station B. ESB Executive Safety Board. ESF Exploratory Studies Facility. A colorimetric indicator on an air- purifying respirator which indicates when to discard the purification element. ESO Environment and Safety Officer, also Environment and Safety Office. ETA East Turn Around.
Communication takes place by means of modulation of radio frequency signals.
ETR Estimated Time of Repair. Inc. EUP Experimental Use Permit. EUV Extreme Ultraviolet eV Electron Volt. A unit of energy equal to the work done by moving an electron across a potential difference of one volt. EW ElectroWeak EWP ElectroWeak Penguins EWSB Electro-Weak Symmetry Breaking.