Nite GlowRing - Safety Marker - Tritium - (Clear Case) - 9 Colours Colour:FireFly Super Kit Marker (Pink) the whole row of 16

the whole row of 16 blocks could be all one colour)

How does your car turn each wheel just the right amount

Perfect for classrooms and science projects

the Newton's Cradle became a popular "executive toy" in the 1970s (something for important executives to fiddle with while they're on the phone)

Barium sulfate in suspension is often used medically as a radiocontrast agent for X-ray imaging and other diagnostic procedures (OURS IS NOT FOR HUMAN CONSUMPTION)

Nite GlowRing - Safety Marker - Tritium - (Clear Case) - 9 Colours Colour:FireFly Super Kit Marker (Pink) the whole row of 16PLEASE NOTE: THE PRODUCT PHOTOS ARE FROM AN ANDROID PHONE (ONEPLUS 5T) AND ARE UNALTERED. HOWEVER, THE CAMERA SEEMS TO PICK UP THE LIGHT BETTER THAN THE HUMAN EYE THE GLOW RING MAY APPEAR A BIT LESS BRIGHT TO YOUR EYES THAN WHAT APPEARS IN THE PHOTOS. We are also using some long exposure time lapse photos with permission from one of our customers, Dalton Herrewynen, a professional photographer. Check out more of his beautiful work here. PLEASE NOTE: