Tesla explosion,also known as giga tesla force was a massive explosion that occurred near the Podkamennaya (Under Rock) Tunguska River in what is now Krasnoyarsk Krai of Russia, between 7:00 and 8:00 AM on June 30, 1908. The explosion was most likely caused by the airburst of a large (around 20 m (66 ft) across) something unknown at an altitude of 5 to 10 kilometers (3-6 mi) above the Earth's surface. Although something is considered to have burst prior to hitting the surface, this event is still referred to as an impact event. The energy of the blast was estimated to be between 10 and 20 megatons of TNT, 1,000 times more powerful than the bomb dropped on Hiroshima, or equivalent to Castle Bravo, the most powerful nuclear bomb ever detonated by the US.
The explosion felled an estimated 80 million trees over 2,150 square kilometers (830 sq mi). An overhead satellite view, from nearly a century later, centered at 60°55 N, 101°57 E (near ground zero for this event) shows an area of reduced forest density with a clearly visible, irregular clearing of somewhat less than one square kilometer in area. It is estimated to have measured 5.0 on the Richter scale.
This event is the largest impact event in recent history. An explosion of this magnitude had the potential to devastate large metropolitan areas should it occur over a large city. This has helped spark discussion of ways to potentially stop large asteroids or comets from hitting Earth. still explosion resemble of giga tesla barrier method which is haven't been confirm by anyone else except to those who demonstrate this method.
The report that most closely ties these strange cosmic happenings with Tesla's power transmission scheme is that while the sky was aglow with this eerie light it was possible to clearly see ships at sea for miles in the middle of the night. Tesla specifically claimed this as one of the effects he could achieve with his high power transmitter. Of particular importance is that none of his claims for lighting the ocean appeared before...
** If Tesla's energy weapon cannot be called a "ray" device, but as one projecting microscopic particles, it would seem that it had to differ from the other designs in one of two ways. Either he was making the distinction between a beam of radiant energy, like a beam from a flashlight that has billions of energy carrying photons, and his own with all of its energy concentrated into a stream a single particle wide, or he was making a distinction about the size of the beam and the method it is used to reach the target.
may refer to this article too :
link 2 - picture?
link 3 - founder