The phrase "a second lamp" is correct and usable in written English.
You can use it when referring to an additional lamp, typically in a context where multiple lamps are being discussed or compared.
Example: "I decided to buy a second lamp for my living room to improve the lighting."
Alternatives: "another lamp" or "an additional lamp".
A 2.8-W lamp was mounted 2.5 cm above each lever; a third lamp was mounted 10 cm above the central recess.
Inside the headlamp housing is a second smaller lamp angled toward the side.
The current at the receiving station passed into a string galvanometer, and laterally displaced a small shutter attached to the "strings," this movement cutting off more or less of the light projected from a second Nernst lamp on to a sensitive photographic film revolving synchronously with the transmitting cylinder, and one-quarter its size.
People blinked in the smoke of Lower Manhattan as though someone had flicked on a third-degree lamp.
EVERY second lamp-post in Dublin seems to be festooned with advice about the referendum.
He designed his first lamp by default when a family friend asked him to turn a glass vase into one.
Three LAMP systems were developed; in two of those the primers were designed based on shared regions of the ITS1 gene among different Leishmania species, while the primers for the third LAMP system were derived from a newly identified repeated region in the Leishmania genome.
That evening, around 5 30, the first lamp will be lit atop the thirty-two-foot-tall menorah on Fifth Ave .at 59th St.
Third, LAMP results can be read by the naked eye, on the basis of the change of turbidity.
Although late endosomal/lysosomal membrane proteins like the mannose 6-phosphate receptor are not found at the SCV [12], a second lysosomal membrane protein, LAMP-2, is also detected at the SCV [13].
