Here's a fun little project that can make big, fat, noisy sparks at least 2 inches long, and can be built very quickly and cheaply.
How to measure that HV with some precision.
Covers theory, tips, pratical advice, sources, parts, links to other sites, and information about HV probes uses and design.
Comprehensive tables that relate NST volts to various other parameters of the TC.
Testing of Flyback (LOPT) Transformers
HeNe Laser Power Supply Design
:SAFETY Guidelines for High Voltage and/or Line Powered Equipment. Be careful, the life you save may be your own.
Scientists discuss the statistics, biology, and safety at the ICAE. What happens when people and lightning converge.