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Summer tyre

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Posts posted by Summer tyre

  1. I have that Bresser 5 in 1 and it's fine. It had been showing me the low battery icon since about Christmas, but the ground has been too saturated to get a ladder to it. I changed the batteries last week and solved that, but I have noticed that the anemometer doesn't spin quite as freely as it did when new. Can it be serviced, oiled with silicone oil in some way? Any advice welcomed.

  2. One of the major hazards of lightning strikes are ground potential shifts; a lightning strike a few tens of metres away can cause a very large ground potential gradient, to the extent that the ground under your right foot can be hundreds of volts higher than that under your left. Apparently, that is a far larger cause of lightning-induced deaths and serious injuries than actually being struck directly. If you are caught outside in lightning, above all don't lie down - make sure you keep your legs together to minimises the distance between any points in contact with the ground. Entire fields of cows lying down have been killed by lightning strikes for this reason. Equally, this means that nearby electrical equipment can suddenly find a large voltage difference across it and the effect is that the lightning appears to have jumped invisibly to damage it. It hasn't, of course.

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