The bright flash occurs because when sperm enters an egg it leads to a surge of calcium which triggers the release of zinc from the egg. As the zinc shoots out, it binds to small molecules which emit a fluorescence which can be picked up by camera microscopes.
Shibori is a Japanese technique of creating designs in dyed fabric. It is a dye-resist technique, using items that bind the fabric to create areas where the dye will not penetrate. Depending on the materials used and how the fabric is bound, the dyed designs vary from random splashes of color to highly symmetrical patterns.
Nori (æµ·è) is the Japanese name for edible seaweed species of the red algae genus Pyropia, including P. yezoensis and P. tenera. Nori is familiar in the United States and other countries as an ingredient of sushi, being referred to as nori (as the Japanese do) or simply as seaweed. Finished products are made by a shredding and rack-drying process that resembles papermaking.