Good test question,
1.Who was the first person to produce the first mercury vapor lamp for production?

2.Who was the first person to demonstrate the mercury vapor lamp?

3.Who was the first person to demonstrate the Metal Halide lamp?

4.In 1976 Who invented the CFL for production?

The CFL was invented before 1976, but this is indeed the year when it was first presented to the Press by Philips.

Ed Hammer created the first Modern CFL.