[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

**To**:**Aquatic-Plants at actwin_com****Subject**:**Re: light bulb and tannins****From**:**Richard R <email2me1 at home_com>**- Date: Fri, 19 Jan 2001 13:58:32 -0800
- In-Reply-To: <200101190848.DAA11236 at actwin_com>

> > From: "Scott D. Goett" <sdgoett at ufl_edu> > > > > I tried asking these questions before but go no response, so I thought > > I would try again.. > > I have 2 questions. One is about those twisty fluorescent bulbs that > > are said to have the brightness of a 75 watt buld but only use 20 > > watts. My question is when you are calculation the watts per gallon, > > which number do you use? Are those bad bulbs to use? From: zxcvbob <bob at a51web_net> >You use the "20 watts" number, but you should discount it considerably >(25 percent?) because the manufacturers' numbers are overly >optimistic, and to account for the energy wasted by the intregrated >ballasts. ..................... Scott, they mean brightness 75watt of Incandescent light bulb while it uses only 20watts. It's only to compare. So you use the 20watt number. Bob, you don't have to discount anything. Number of Watts has nothing to do with output of the light bulb. It is like this : P = U x I ( P= V x I in Canada ), Power = Voltage x Current sure i might be wrong :-) Richard

- Prev by Date:
**MTS?** - Next by Date:
**Carbo Plus-New Lower Price.** - Prev by thread:
**Re: light bulb and tannins** - Next by thread:
**Re: light bulb and tannins** - Index(es):