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  • Scanning electron microscope image of a staghorn fern leaf (Platycerium holtummii)  magnified 76x.  Staghorn ferns are epiphytic perennials or "air" plants. Staghorns are native to jungles in Africa and Asia .
    K08-semFERN1.jpg
  • Scanning electron microscope (SEM) image of the  sporangia (spore sacs)  of the "male fern".  The sporangia are borne on the undersides of the leaf fronds in brown kidney- shaped structures known as sori.   Each sporangium is a biconvex capsule in which the mature spores lie freely.   As the mature sporangium dries, the tension in the walls of the annulus causes the sporangium to rupture, expelling the spores which are then distributed by the wind. The calibration bar is 20 um and the image was collected at a magnification of 2,280x.
    K08semfern049B.jpg
  • Scanning electron microscope (SEM) image of the  sporangia (spore sacs)  of the "male fern".  The sporangia are borne on the undersides of the leaf fronds in brown kidney- shaped structures known as sori.   Each sporangium is a biconvex capsule in which the mature spores lie freely.   As the mature sporangium dries, the tension in the walls of the annulus causes the sporangium to rupture, expelling the spores which are then distributed by the wind. The calibration bar is 20 um and the image was collected at a magnification of 2,280x.
    K08semfern045b.jpg
  • X-Ray of a Hapu'u ferns (Cibotium splendens) Collected in Hawaii, USA.
    K13X-ferns1best.jpg
  • X-Ray of a Hapu'u ferns (Cibotium splendens) Collected in Hawaii, USA.
    K13x-fers1bestC.jpg
  • A cyanotype print with the fern that cast the shadow seen in the print.  In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-9.jpg
  • A cyanotype print with the fern that cast the shadow seen in the print.  In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-2.jpg
  • A cyanotype print with the fern that cast the shadow seen in the print.  In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-3.jpg
  • A cyanotype print with the fern that cast the shadow seen in the print.  In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-10.jpg
  • A sheet of exposed cyanotype chemical paper with the fern that blocked the UV light. Exposure to UV light has caused the chemicals to turn blue. The next step would be to wash the print in water. In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-7.jpg
  • A sheet of unexposed paper treated with the cyanotype chemicals. The ferns are placed on the treated paper to block UV light.  Exposure to UV light will cause the chemicals to turn blue. In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-5.jpg
  • A sheet of unexposed paper treated with the cyanotype chemicals. The ferns are placed on the treated paper to block UV light.  Exposure to UV light will cause the chemicals to turn blue. In this process an object is placed on the ultraviolet sensitive chemically treated paper and exposed to a strong UV light source – in this case sunlight.  The object is then removed and the print washed in cool water to remove the unreacted chemicals. Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-6.jpg
  • Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-8.jpg
  • A sheet of unexposed paper treated with the cyanotype chemicals.  Exposure to UV light will cause the chemicals to turn blue.  Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-4.jpg
  • Cyanotype is a photographic printing process that produces a cyan-blue print. Engineers used the process well into the 20th century as a simple and low-cost process to produce copies of drawings, referred to as blueprints. The process uses two chemicals: ammonium iron(III) citrate and potassium ferricyanide.  The English scientist and astronomer Sir John Herschel discovered the procedure in 1842.
    K14-cyanotype-1.jpg
  • A false color X-ray of a fern.
    K15Xfern01C.jpg
  • A false color X-ray of a fern.
    K15Xfern01D.jpg
  • A false color X-ray of a fern.
    K15Xfern01B.jpg
  • A false color X-ray of a fern.
    K15Xfern01A.jpg
  • This image of an electrical discharge was made by placing a block of Lucite in the 6 megavolt (6Mv) electron beam of a linear accelerator. The Lucite gained a tremendous electrical charge when a grounded electrode was placed near it. The current flowing to ground melted the Lucite, leaving a record of the current flow. This fern-like fractal structure is quite common in electricity.
    lichtenberg_00035_RT8B.jpg
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