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Seller Store berthickman
(4976) 100.0%,
Location: Woodridge, Illinois
Ships to: US,
Item: 202636154810
Restocking Fee:No
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Item must be returned within:14 Days
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We captured a miniature lightning bolt inside this 2″ x 2″ x 3/4″ block of clear acrylic! The scientific name for our Captured Lightning sculpture is a Lichtenberg figure (sometimes called a beam tree or an electron tree). 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 added. 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 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 had a potential of 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 thousands of 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, 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. Every Captured Lightning sculpture is unique. The lucky buyer will receive a sculpture of comparable quality as the one shown below, and a one-page explanation about what it is and how it was created. As with snowflakes, each Captured Lightning sculpture is unique! Buyer will receive one sculpture of comparable quality as the one shown below, and a one-page explanation about how it was created. Base is not included. To order a sculpture AND base, see eBay item 161931210019. Typical specimen in sunlight. Note: the pictured base is no longer available. Auction is for sculpture ONLY. To order a sculpture with a round, mirrored multicolor light base, use eBay item I61931210019 instead. Our Captured Lightning sculptures are stunning and rare objects of scientific art, and they are only available from us. Very few people have actually seen a Lichtenberg Figure, and far fewer are privileged to own a specimen as beautiful as this. The sculpture literally glows if illuminated on an edge by a bright light source (not included but available at additional cost). The internal fractures behave like little mirrors, causing the larger discharge paths to sparkle in an almost crystalline fashion, Even the most delicate hair-like tips of the figure are highlighted.Our team of experienced physicists are Lichtenberg Figure experts (“Spark Whisperers”). Stoneridge Engineering offers Lichtenberg Figures that range in size from affordable 2 x 2 x 3/4 inch squares, gorgeous prisms and cubes with multiple discharge layers, to huge 15 x 20 x 2 inch museum quality specimens. They make ideal gifts for those folks who “have everything” or for discriminating collectors of rare and beautiful objects. 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! Track Page Views With Auctiva’s FREE Counter
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