... touching1
<#969#>Avoid rubbing which may result in charge separation of opposite sign (depending on the proofball metal and type of insulator: ``triboelectric series'', see exp #6 of Part II).<#969#>
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... fact:2
<#2344#>The actual #tex2html_wrap_inline2430# at the maximum electron orbit is only #tex2html_wrap_inline2432#~0.5 less. See Price, ``Electron trajectory in an #tex2html_wrap_inline2434# experiment'', <#2186#>Am.~J.~Phys.<#2186#>~<#2187#>55<#2187#>,~18,~(1987)<#2344#>
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... brightness3
<#3508#>CAUTION: a stationary intense spot may damage the screen<#3508#>
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... silicon;4
<#3686#>As one might expect since silicon has valence 4, phosphorus valence 5, and aluminum valence 3<#3686#>
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... caliper5
<#6927#>In all the following be sure you are not looking through the hole at one end of the jaws. It is advisable to cover the hole with masking tape.<#6927#>
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... objective.6
<#6931#>Be sure no light enters the telescope except through the slit jaws. (You may need masking tape on the caliper jaws to prevent this from happening.)<#6931#>
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