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While the light bulb is quite a rudimentary means for determining what is radiating, it could be used to convince the doubters that the cone radiates. Since we know voltage and current are simply 90 degrees out of phase with one another along a radiator, once you locate a voltage node, it's fairly safe to assume a proportional current node will be just a 1/4 wavelength away.

Energize the Sigma and move the bulb from the base of the cone towards the loop on the cone. When you approach the voltage node towards the loop, the bulb will light. This idea will still leave many important issues unanswered. Where an understanding of the posted computer models would easily remove all doubt. Just because you can confirm the cone is radiating with the light bulb, it tells us nothing about the phase of that radiation and how it constructively combines with the main radiator in the far field.

<blockquote data-quote="Shockwave" data-source="post: 385122" data-attributes="member: 10882">While the light bulb is quite a rudimentary means for determining what is radiating, it could be used to convince the doubters that the cone radiates. Since we know voltage and current are simply 90 degrees out of phase with one another along a radiator, once you locate a voltage node, it&#039;s fairly safe to assume a proportional current node will be just a 1/4 wavelength away.Energize the Sigma and move the bulb from the base of the cone towards the loop on the cone. When you approach the voltage node towards the loop, the bulb will light. This idea will still leave many important issues unanswered. Where an understanding of the posted computer models would easily remove all doubt. Just because you can confirm the cone is radiating with the light bulb, it tells us nothing about the phase of that radiation and how it constructively combines with the main radiator in the far field.</blockquote>

[QUOTE="Shockwave, post: 385122, member: 10882"] While the light bulb is quite a rudimentary means for determining what is radiating, it could be used to convince the doubters that the cone radiates. Since we know voltage and current are simply 90 degrees out of phase with one another along a radiator, once you locate a voltage node, it's fairly safe to assume a proportional current node will be just a 1/4 wavelength away. Energize the Sigma and move the bulb from the base of the cone towards the loop on the cone. When you approach the voltage node towards the loop, the bulb will light. This idea will still leave many important issues unanswered. Where an understanding of the posted computer models would easily remove all doubt. Just because you can confirm the cone is radiating with the light bulb, it tells us nothing about the phase of that radiation and how it constructively combines with the main radiator in the far field. [/QUOTE]

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