that is the key piece of data | |
Is it 8900 lumens at:
a) the bulb, meaning total energy output
b) 12" from the bulb
c) some other distance
Maybe we should call them. Without knowing what 8900 represents, we are p*ssing in the wind.
As as aside, seems like a manufacturer would want to make it look as good as possible. That means 8900 is probably right at the bulb. However, there may be some industrial standard which defines what can be put on a label.
But that still doesn't explain the instore readings.
Choader
PS - I love this conversation. The EE in me is excited. |