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Learning
Transcript
00:00Plants are rooted to the ground and have a small negative charge.
00:04The higher up the plant you go, the greater the electric charge.
00:08This creates an electric field around the flower.
00:11We can't see it, but these electrodes are picking up the energy of this tiny field
00:17and converting it into the sound that we can hear.
00:21Bees, on the other hand, have a positive charge.
00:25Friction whilst flying causes them to lose electrons.
00:28As a bee approaches a flower, the charge fields around the flower and the bee interact
00:33and the sound changes.
00:36There.
00:37And when it lands, the positive and negative fields immediately cancel each other out.
00:44As this happens, there are two very surprising consequences.
00:48Firstly, the plant's negatively charged pollen actually jumps across onto the positively charged bee.
00:55Secondly, the plant has a changed electrical field.
01:00And when another bee comes along, it detects this altered electrical signature and avoids the flower.
01:06The plant is, in effect, telling the bee that it has no nectar and to come back later.
01:12The plant is a natural plant.
01:13The plant is a natural plant.
01:14The plant is a natural plant.
01:15The plant is a natural plant.
01:16The plant is a natural plant.
01:17The plant is a natural plant.
01:18The plant is a natural plant.
01:19The plant is a natural plant.
01:20The plant is a natural plant.
01:21The plant is a natural plant.
01:22The plant is a natural plant.
01:23The plant is a natural plant.
01:24The plant is a natural plant.
01:25The plant is a natural plant.
01:26The plant is a natural plant.
01:27The plant is a natural plant.
01:28The plant is a natural plant.
01:29The plant is a natural plant.
01:30The plant is a natural plant.
01:31The plant is a natural plant.
01:32The plant is a natural plant.
01:33The plant is a natural plant.
01:35The plant is a natural plant.
01:36The plant is a natural plant.
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