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Comment Re:Original Metal Detectors Used Vacuum Tubes (Score 1) 95

No. A TWT relies on the velocity of electrons inside the tube and bunches up the electrons. At least a full cycle of the signal has to be present inside the tube at once. If the velocity is about c/10 (I'm guessing this is a reasonable low end) the tube would have to be 150 meters long for a 200 kHz signal.Precision machining is required, so TWTs are expensive.

Metal detectors operate at frequencies where semiconductors can be extremely efficient -- I'm guessing better than 90% using PWM and LC filtering. There's not much utility in trying for more.

Comment Re:Good (Score 1) 780

The rights of children are not the same as the rights of adults. The parents' responsibility for their children gives them special proper powers over their children, a subset of which, in loco parentis, are temporarily extended to schools.

Using their best judgement, parents may spank their children to prevent them from running in front of cars or kicking the neighbor's pitbull. This is not a violation of a child's rights.

Comment Re:Dad of Ahmed is an Islamic Supremacist (Score 1) 780

All that is necessary for the triumph of evil is that good men do nothing. (Edmund Burke)

Ignoring loud people with dangerous stands gives ignorant bystanders the impression that there's nothing wrong. There's no requirement that I actively oppose villains, but I'm not improving the world when i fail to do so.

Comment Re:Godwin (Score 1) 575

If "the" dictionary claims fascism as "right wing", it's wrong. Fascism is characterized by nationalism and government control of property (especially business) with property ownership remaining in private hands in name only. Since "right wing" is based first on the right to life and second on property rights, fascism and the right are mutually exclusive.

Comment Re:This might put him over the top in the polls (Score 1) 575

Good statistics are hard to come by, but best estimates are that the percentage of millionaires is higher among Democrats than Republicans.

Jackson's Democratic Party was founded in 1828 to preserve and promote race-based slavery, and that remains its goal in modern disguise. In 1896, William Jennings Bryan added theft to the Democrat arsenal.

Do not underestimate the value of print statements for debugging.