Re: [compost_tea] Re: Full moon & foliar spraying

From: Brian Leslie <damoclesone_at_gmail.com>
Date: Sat, 12 Nov 2011 03:50:35 -0600

If you have an ohm meter (or you can buy a cheap analog one for ~$10 and pl=
ay with it), hook up the leads to the panel wires and set the meter to DC v=
oltage (not amps/watts!). Unfortunately, the voltage does not directly indi=
cate light intensity; you would have to factor the size of the panel(s), th=
e angle of the light source, and resistance. Also, a shadow covering even a=
 small part of a daisy-chain can make the reading useless.

A simpler option would be to use a light meter. I saw some for sale in a sp=
ecialty gardening shop for ~$30 (the one I saw also measured soil moisture)=
. They are useful for testing shaded areas to explore plant options, but I =
would bet they're not sensitive to moonlight. An iPhone can measure light, =
but app reviews report that it also poorly measures low-light conditions. M=
aybe an SLR camera or photographic light meter can do better.

Brian _at_ Baton Rouge, Louisiana

On Nov 11, 2011, at 23:27, "Stephen Steyn" <ssteyn_at_wcaccess.co.za> wrote:

> I’ll ask the guy who took the reading when I see him again.
>
> SS
>
>
>
> From: compost_tea_at_yahoogroups.com [mailto:compost_tea_at_yahoogroups.com] On=
 Behalf Of Jerry G
> Sent: 11 November 2011 09:18
> To: compost_tea_at_yahoogroups.com
> Subject: Re: [compost_tea] Re: Full moon & foliar spraying
>
>
>
>
>
> Interesting. Any way to measure the amount?
>
> On 11/11/2011 1:51 AM, Stephen Steyn wrote:
> > And something else from left field.
> >
> > My solar panels show a power reading in moonlight.
> >
> > I never thought the moon emitted so much light.
> >
> > SS
>
>
>



Received on Sat Nov 12 2011 - 22:26:20 EST

This archive was generated by hypermail 2.3.0 : Tue Feb 07 2012 - 13:58:13 EST