Tonight's clear vision video:
Sunday morning music - I think it's time for a little classical music. How about Mendelssohn's Violin Concerto? This performance is by Sayaka Shoji, performing last year during...
1 day ago
... These are two gigantic solid state musical Tesla Coils. A Tesla Coil is a special type of transformer invented by Nikola Tesla that is able to generating extremely large voltages using a phenomenon known as electrical resonance. Each coil in this video is capable of generating a 13 foot spark. This equates to about 500,000 volts of electricity.
The primary drive system for the coils consists of high power semiconductors arranged into an H-Bridge switching configuration. During a spark event, the coil is pulsed on for a few hundred millionths of a second. During this short time, thousands of amps circulate within the primary tank circuit and the energy is coupled into the secondary resonator through magnetism.
So what appears to be a continuous burst of sparks is actually a specific number of sparks generated per second. By modulating the number of sparks that emit from the coil each second, different tones can be produced by the coils. ...
Salve, Regina, Mater misericordiae,
vita, dulcedo, et spes nostra, salve.
ad te clamamus exsules filii Hevae,
ad te suspiramus, gementes et flentes
in hac lacrimarum valle.
Eia, ergo, advocata nostra, illos tuos
misericordes oculos ad nos converte;
et Iesum, benedictum fructum ventris tui,
nobis post hoc exsilium ostende.
O clemens, O pia, O dulcis Virgo Maria.
Hail, holy Queen, Mother of Mercy,
our life, our sweetness and our hope.
To thee do we cry, poor banished children of Eve;
to thee do we send up our sighs,
mourning and weeping in this valley of tears.
Turn then, most gracious advocate,
thine eyes of mercy toward us;
and after this our exile,
show unto us the blessed fruit of thy womb, Jesus.
O clement, O loving, O sweet Virgin Mary.