We captured a lightning bolt inside a 2" x 2" crystal clear acrylic block! Please note: Lighted base is not included. Please Note: If you want to order a sculpture and round mirrored multi-color color-changing light base, see item 161924798446 instead. The scientific name for our Captured Lightning sculptures is a Lichtenberg figure. These are sometimes called beam trees or an electron trees. This specimen was created by charging the inside of the block to almost 2 million volts, then suddenly discharging it. Lichtenberg Figures are named in honor of Georg Christoph Lichtenberg, the 18th century physicist who first discovered them. Lichtenberg originally used high voltage electrostatic discharges and finely powdered sulfur and lead oxide to create his 2-dimensional dust figures. Using 21st century particle beam technology, we created this modern 3-dimensional version by bombarding acrylic with trillions of high-speed electrons using a particle accelerator. The accelerator creates a beam of electrons that are moving at 99.5% the speed of light. The energetic beam of electrons are aimed towards the flat surface of an acrylic block. As they slam into the acrylic, they penetrate the surface, slowing down as they collide with the acrylic molecules, finally coming to rest about half way through. The electrons form a cloud-like region of excess negative charge, called a space charge, to form inside the acrylic. Since acrylic is an excellent electrical insulator, the space charge can't escape, and tremendous electrical stresses rapidly build as more electrons are forced into the acrylic. In a process similar to natural lightning, the electrical stress finally overcomes the insulating strength of the acrylic, and the trapped electrons suddenly escape as a brilliant electrical spark. Usually, as in the photo below, we trigger the discharge by poking the charged acrylic with a sharp metal point. Once the acrylic breaks down, a torrent of trapped charge quickly rushes out of the specimen as a miniature bolt of lightning, accompanied by a flash and a BANG. A one-page explanation of how your sculpture was created will be shipped along with your sculpture. As with lightning, the branching, self-similar discharge can be described mathematically as a type of fractal. Typical specimen being manually discharged. Internal charge layer is over 2 million volts Although the actual "electrical storm" within the acrylic rages for less than 40 billionths of a second, the hot discharges cause countless permanent microscopic fractures and tubes in the acrylic, forming a permanent Lichtenberg Figure inside the block. Newer specimens may also have a golden tint, called solarization, left over from from the irradiation process. Although solarization fades with time or through the application of gentle heat, the Lichtenberg figure itself is permanent.  The internal chains of microscopic fractures act as tiny mirrors, brilliantly reflecting any light that is injected from the bottom or along an edge. The sculpture is best viewed against a dark background. Shining light from behind (such as light through a window) can actually detract from the sculpture’s detail and overall appearance. As with snowflakes, each Captured Lightning sculpture is unique! The lucky buyer will receive one sculpture of comparable quality as the one shown below, and a one-page explanation about how it was created. Our Captured Lightning sculptures are stunning, unique works of scientific art. Very few people have even seen a Lichtenberg figure, and far fewer have ever had the opportunity to own one as nice as this. The internal figure glows brilliantly when illuminated from the edge by a bright light source or LED's. They make ideal gifts for those folks who "have everything" or for discriminating collectors of rare and beautiful objects. Our team of experienced physicists are Lichtenberg figure experts ("Spark Whisperers"). Stoneridge Engineering offers sculptures in sizes from affordable 2 x 2 x 3/4 inch blocks, gorgeous prisms, cylinders, and cubes with multiple discharge layers, to huge 15 x 20 x 2 inch museum quality specimens. Also, please see other styles of beautiful Lichtenberg Figures and our amazing electromagnetically shrunken coins. "A physical experiment which makes a bang is always worth more than a quiet one. Therefore a man cannot strongly enough ask of Heaven: if it wants to let him discover something, may it be something that makes a bang. It will resound into eternity." G. C. Lichtenberg 1742-1799  PLEASE NOTE: Items being shipped to countries outside the US may be subject to additional charges (Customs Fees, VAT, or In-Country Mail Service Handling fees). Payment of these fees are the sole responsibility of the buyer. An ideal item for that amateur scientist, student, or collector on your gift list!