I actually did this. There is only one location in the two neighbouring counties where I live that accepts them.

I went to the location and what looked like a administrative assistant took me back into the warehouse. I had properly contained the 18 CFL bulbs in a zip lock bag. ( And yes, that was 18 out of 50 bulbs failing over a 3 year period or so. She took the bag of bulbs, opened the bag over a normally looking work desk (with paper work on it and all), and proceeded to pull out the bulbs one at at time using her bare hand and place them on the desk, including the now broken bulbs. I reminder her about the danger of mercury, but she shrugged it off.

I asked her why she was counting the bulbs so specifically. Her reply was, "Because there is a $0.60 fee for disposing of each bulb."

She then handed me a form that required a good bit of personal information and recorded on it the number and type of bulbs returned along with the additional $11 I was charged for the privilege of "saving the planet".

The whole experience was surreal!

Duly corrected...

10^18 Watts/cm^2 with a 20cm disk for 1 picosec == 87.2 KWH ?
2.9 MeV per alpha particle * 100,000 ~= 0.00000046 n M

I'm not into engine building, but that seems like a tiny amount of thrust for 87.2 KWH.

10^18 Watts/cm^2 with a 20cm disk for 1 picosec == 87.2 KWH ?
2.9 MeV per alpha particle * 100,000 ~= 0.00000047 joules

I'm not into engine building, but that seems like a tiny amount of force for 87.2 KWH.

Do you understand the meaning of "Mandatory"?