|What is a Jacob's
According to Wikipedia,
a Jacob's ladder
(more formally, a high voltage traveling arc) is a device for
producing a continuous train of large sparks which rise upwards. The
spark gap is formed by two wires, approximately vertical but
gradually diverging away from each other towards the top in a narrow
"V" shape. It was named for the "ladder to
heaven" described in the Bible.
When high voltage is
applied to the gap, a spark forms across the bottom of the wires
where they are nearest each other, rapidly changing to an electric
arc. Air breaks down at about 30 kV/cm, depending on humidity,
temperature, etc. Apart from the anode and cathode voltage drops,
the arc behaves almost as a short circuit, drawing as much current
as the electrical power supply can deliver, and the heavy load
dramatically reduces the voltage across the gap.
The heated ionized air
rises, carrying the current path with it. As the trail of ionization
gets longer, it becomes more and more unstable, finally breaking.
The voltage across the electrodes then rises and the spark re-forms
at the bottom of the device.
This cycle leads to an
exotic-looking display of electric white, yellow, blue or purple
arcs which is often seen in films about mad scientists.
devices are dangerous. The sparks can burn through paper and plastic
and start fires. Contact with the exposed high-voltage conductors can
be lethal. Do Not Try This At Home!!!
What is a Tesla
Wikipedia, a Tesla coil is an
electrical device based on a type of resonant transformer circuit
invented by Nikola Tesla around 1891.
It is used to produce high voltage, low current,
high frequency alternating current electricity.
Tesla coils produce
higher current than the other source of high voltage discharges,
electrostatic machines. Tesla experimented with a number of
different configurations and they consist of two, or sometimes
three, coupled resonant electric circuits.
used these coils to conduct innovative experiments in electrical
lighting, phosphorescence, x-ray generation, high frequency
alternating current phenomena, electrotherapy, and the transmission
of electrical energy without wires. Tesla coil circuits were used
commercially in spark gap radio transmitters for wireless telegraphy
until the 1920s, and
in pseudo medical equipment such as electrotherapy and violet ray
devices. Today their main use is for entertainment and educational
Coils are VERY Dangerous. Do Not Try This At Home!!!