| 摘要 |
PROBLEM TO BE SOLVED: To capture the trajectory of a bullet easily and to facilitate collection thereof by forming the bullet of a biodegradation model gun using an N noctilucent pigment absorbing and storing UV-rays of sun light or fluorescent lamp to emit light at high brightness for a long time so that the bullet can emit light in dark night. SOLUTION: The bullet of a model gun is produced of a material containing an N noctilucent pigment absorbing and storing UV-rays of sun light or fluorescent lamp to emit light at high brightness for a long time so that the bullet lights clearly in the dark and hits a light emitting target accurately. When such a bullet is applied to a machine gun, trajectory of bullets is lighted as a line in case of high speed continuous shooting and various games can be enjoyed in dark night. Gelatin or corn starch is suitable as the material of bullet and a translucent gelatin material is admixed with a small quantity of an N noctilucent pigment while starch is coated, on the surface thereof, with the N noctilucent pigment using a transparent vehicle.
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