This is Thrilling Wonder Stories for Summer 1946, cover by Earle Bergey. The ISFDB entry for this issue is here. I found this version of the cover at Pulp Covers. Here is some unattributed (but intriguing) internal art illustrating Polton Cross’s story “Twilight Planet:”
You can download and read the entire issue at the Internet Archive.
Her mother never told her to always wear a slip when conducting atomic experiments.
“Mad Scientist’s Beautiful Daughter” is an elegant trope. Shame that she is punished in the Agony Beam.
http://tvtropes.org/pmwiki/pmwiki.php/Main/AgonyBeam
At the delightful Steam and Wireless Museum, arrangements of plates in a tower are called “spark transistors.”
http://newsm.org/wireless-e/spark-transmitters/
I am quoting at length here because of the MadLab vocab:
“Spark transmitters … were the peak of spark development and used the multi-plate discharger of Max Wien (though arguably invented by Nikola Tesla) which formed the basis of most of Telefunken’s spark sets and was the source of the “whistling spark” used by many stations and commonly known as the “quenched” spark gap.”
http://home.freeuk.net/dunckx/wireless/sparksnarcs/sparksnarcs.html
Is it wrong that I have dirty thoughts about a whistling or quenched spark gap?
No. It is not at all wrong.
Who else got a flashback to the original Planet of the apes?