diode such that light emitted at a p-n junction is proportional to the bias current; color depends on the material used
travel in front of; go in advance of others;
take somebody somewhere; "We lead him to our chief"; "can you take me to the main entrance?"; "He conducted us to the palace"
be conducive to; "The use of computers in the classroom lead to better writing"
have as a result or residue; "The water left a mark on the silk dress"; "Her blood left a stain on the napkin"
tend to or result in; "This remark lead to further arguments among the guests"
stretch out over a distance, space, time, or scope; run or extend between two points or beyond a certain point; "Service runs all the way to Cranbury"; "His knowledge doesn't go very far"; "My memory extends back to my fourth year of life"; "The facts extend beyond a consideration of her personal assets"