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Sat, 30 Dec 2023 10:28:31 -0700 |
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The disturbance is due to movement/vibration caused by us humans (sometimes
squirrels). At -15C temperatures in my setup, the bees are in the zone
(perfect balance) between resting heat generation, CO2 levels, and the
cluster is silent (no noise). As temperatures drop a slight hum develops.
Tipping over my entrance protector (leaning plywood) exposes the entrance
to light which is typically enough to generate a slight reaction (minor). A
single tap causes a medium low impact reaction. Anything longer will
typically create a heating event (like a cluster re-organization event).
During much colder temperatures, the bees will self-initiate heating events
at set intervals likely based on the need for moisture and forced venting
of accumulated CO2 when levels reach upper limits (needs to be tested). I
might be able to confirm the CO2 levels link if we get our 2-3 weeks of -30
to -50.
The sensor once placed is flat and about 2.5cm x 2.5cm x 0.5cm surrounded
by an inert hard clear plastic shell. The temperatures revert back to
normal after 36-48hrs. Heat loss is 10x less then a wooden colony so the
generated heat stays around much longer before being dissipated as a loss
(convective,conductive or radiative) or collected in the honey mass and
things going back to equilibrium.
I actually tested my bee yard of EMF/RF with a friend's tester (he has
those beliefs). The only minor level was about 1 cm from the electric fence
wires during the pulse phase (11kV, 3.1J). My WIFI weather station, sensor
hubs (Bluetooth) and now LoRa, were all 0 at the lowest sensitivity
setting.
1hr interval: 365 x 24 hrs = 8760 readings/year
5 minutes interval: 365 x 24 x 60/5 = 105,120 readings/year
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