IMPORTANT NOTE Due to the increased cost of materials, prices will be going up on July 1. ============= The Laboratory Lamp features a 500ml Erlenmeyer flask with the bottom cut out so that the flask can enclose the bulb. It rests on a 5-1/2" square by 2" tall solid walnut base reminiscent of a laboratory hot plate, with felt covering the bottom of the base. The lamp is available with an on/off toggle switch or a rotary dimmer switch. The dimmer switch is shown in the last photo. A 40 watt spiral-filament Edison-style incandescent bulb is included. You can also choose from a black-and-white zig-zag or solid black cord. Both are fabric covered and have a round vintage-style plug. Other colors may be available on request—don’t hesitate to ask! The flask manufacturer and labeling may vary from that pictured depending on availability. ============= What About Replacement Bulbs? ------------------- The opening at the base of the flask is just a hair over 2 inches, so most bulbs with a diameter smaller than that will work. It uses standard medium-base light bulbs. ============= Does It Get Hot? ------------------- The glass gets warm, but not too hot to touch. It's vented at the top by the mouth of the flask.