Where Can I Find Plans to Build a Hertz Apparatus for Classroom Demonstrations?

[Old Guy]

I would like to find a device to reproduce Hertz's experiment that demonstrated the transmission and reception of EM radiation. The equipment as I recall used a Leydan jar, an inductance coil to boost the voltage, a capacitor with a gap that sparked, and separately a ring with a small (I believe adjustable) gap. Ideally, I would like to get a working model that looks like what Hertz used (OK, I'm willing to substitute a battery for the Leydan jar). Next choice would be something that worked the same, even if it doesn't have that "antique" look. If neither of those are possible, I'd be happy with some plans to build something similar. This would be for a classroom demonstration. Any leads would be appreciated!

 

[jbsteele]

There are a variety of options available for replicating Hertz's experiment. One option is to purchase a "Hertz Apparatus" replica kit, which includes all the components necessary to replicate his experiment, including the Leyden Jar. These kits are available from multiple suppliers such as Edmund Scientific and Science First. Another option is to build the apparatus yourself using plans provided by various sources. For example, the American Institute of Physics has a detailed guide on how to build a Hertz Apparatus using common parts. Additionally, the website Instructables provides detailed instructions on how to build a replica of Hertz's equipment. Finally, if you are looking for an inexpensive option, you may consider building a scaled-down version of the apparatus using common household items. You can find detailed instructions on how to do this on many websites, such as the website of the Royal Institution.