You could also try this activity in the classroom by having a friend look at your pupil. You can study anatomy by looking at your own eye in a mirror. Try It - Study your own eye anatomy!Īnatomy is the study of parts of the body. Nocturnal animals are often kept in dark houses with special lighting that lets you see them during the day. You can see nocturnal animals at your local zoo. If we did have a tapetum lucidum, we might have night vision too! The glowing "red eye" in photographs is actually caused by a reflection off the retina of the eye. Human eyes do not have a tapetum lucidum. Animal scientists can actually look for glowing eyes to find animals at night. You might have seen this happen with a pet dog or cat. Sometimes light reflects off the tapetum lucidum, and the animals eyes appear to glow. This gives the rods a second chance to absorb the light. It reflects light back to the retina a second time. The tapetum lucidum is sort of like a mirror. It is made of thick reflective cells and is beneath the retina. The tapetum lucidum helps with night vision. Many animals eyes have a special part called a tapetum lucidum. The rods pick up light and help the animal see when it is almost completely dark outside. Nocturnal animals have more rods than daytime animals. Rods look like tall cylinders and cones look like small triangles The retina is made up of cells called rods and cones. The pupil sends the light onto the retina. When a nocturnal animal sees light, the pupil allows light to enter the eye. The eye is made up of many different parts. Nocturnal animals can do the same thing using very small amounts of light. Your eyes use this light to help create an image in your brain. You are able to see during the day because there is a lot of light from the sun. The eyes of nocturnal animals differ from human eyes. Some nocturnal animals also have a strong sense of smell or hearing. These animals have a special ability that allows them to see in the dark: night vision!Īnimals use night vision to help them find food or avoid predators. Animals active at night are called nocturnal. The environment is very different at night. You might see owls swooping through the night sky or mice running in the dark grass. A certificate of compliance is available upon request.Imagine being able to see in the dark. If your project requires compliance, please let us know so we can be sure to use the right coating. Phthalates (including, but not limited to: di-(2-ethylhexyl) phthalate (DEHP), dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), diisononyl phthalate (DINP), diisodecyl phthalate (DIDP, di-n-hexyl phthalate (DnHP) or di-n-octyl phthalate (DnOP)) are not intentionally added, nor does the phthalate level exceed 100 ppm.Those materials include lead (soluble and total), antimony, arsenic, barium, cadmium, chromium, mercury and selenium. Lead and heavy metals are not intentionally added, nor does the lead or any individual heavy metals content exceed 25 ppm.We do offer a coating compliant with the Consumer Product Safety Improvement Act (CPSIA) of 2008 regulations and ASTM F963-11 Standard Consumer Safety Specification on Toy Safety, specifically with reference to: We offer multiple glow-in-the-dark coatings depending on your budget, substrate and desired effect. Semi-Automatic: no minimum size maximum size: 25″ x 38″. Fully automatic: minimum size: 15″ x 22″ maximum size 28″ x 40″.In position for entire sheet with crop marks.Area to be screen printed should be 100% solid black (no screens or half tones).For automatic presses: minimum 70# text max 30 pt.Glow-in-the-Dark Printing Specifications Substrates Plastic: glow-in-the-dark printing can be done on a pre-lamination or post-lamination basis.Paper: glow-in-the-dark printing should be done on coated paper only. Glow-in-the-dark should be printed over white to get the most glow effect.When exposing glow-in-the-dark printing to fluorescent light, the ultraviolet light energizes the phosphor particles, causing them to radiate visible light or “glow.” Printing Tips Glow-in-the-dark printing only has a 6-12 month shelf life, so be sure to time your order with that in mind. The ink used can be a UV coating or solvent based. The standard glow-in-the-dark color is yellow/green but additional options include pink, red, blue, and violet. If you can get your target audience to engage by viewing your graphic in the dark, or tie in your message with a glowing theme, you’ll be remembered and increase your ROI. We often see orders for any of the following: direct mail, postcards, Halloween promotions, gift cards, credit cards, packaging, retail POP displays, book covers, greeting cards, and more. Glow-in-the-dark (phosphorescent) is screen printed and can be a fun and unique way to make your piece memorable. Ready to start your Project? Request a Quote
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