Why does not the birds stand on the high voltage line
Tip: bending the copper wire when you can use a file in the curl file a small mouth
Birds between the claws of the distance of 5 cm, this 5 cm long wire resistance is only 1.63 × 10 -5 times Ω, the two ends of the voltage does not exceed 5.23 times by ten -3 times v, if the bird's body resistance Is Ω, the current through the bird's body is only 5.3 × 10 -7 amps
Friends, 220V that point of radiation compared to the radiation we are living in the environment, is simply the contrast between sesame and train, so do not worry, you use the day of the radiation of your phone that year of the N-year radiation of the wire ~
Mac simply can not boot if the computer simply can not boot - you have not heard the boot sound, disk operation sound or fan sound - please try the following steps one by one until you solve the problem so far
