Light Meter Soil How do moisture meters work without batteries?
I recently purchased a small device for gardening that can read light levels and the PH and moisture levels in soil. Since it does not use any batteries (including no in-built battery) how does it work? Can it determine moisture content through a chemical process? The meter just has two metal probes that are stuck into the soil.
It uses the same principle as your classic "lemon" or "Mr Potato" battery. (Stick two nails in a lemon, connect a small light in between, and the light will turn on")
The meter just "measures" the conductivity of the solid. No water = no conductivity = no meter reading
Water helps create a small current between the two probes and then you get a measurement.
Help me finish this paragraph for my research paper?
It needs to be longer. In "no person" please. ^-^
Over a period of six weeks a two-by-two meter area was observed. The changes
in the environment were recorded. This includes abiotic factors such as air temperature,
soil temperature, moisture conditions, and light conditions. Also included in this observation
are biotic factors such as biotic factors such as flora and fauna.
Keep in mind this is the introductory paragraph.
Please note that all the materials, graphs, diagrams are plagiarised from various sources on the internet and Yahoo Answers.
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One Response
Posted on 12. January 2011 at 19:40
Daniel Kozub
I’d like to give my apologies to Arno Arrak. I started composing my comment before yours cleared moderation. You gave the best skeptical analysis of this article.I disagree with your non-cooling volcano hypothesis/concept. It can easily be tested using a light meter under a volcanic plume on an otherwise sunny day.
Daniel Kozub
I’d like to give my apologies to Arno Arrak. I started composing my comment before yours cleared moderation. You gave the best skeptical analysis of this article.I disagree with your non-cooling volcano hypothesis/concept. It can easily be tested using a light meter under a volcanic plume on an otherwise sunny day.