ගැන වීඩියෝ Radioactive
radioactive (17)
radiation (53)
nuclear (73)
science (925)
explosion (70)
radioactivity (12)
atomic (33)
physics (468)
history (481)
fukushima (7)
gamma (20)
diy (1746)
disaster (33)
chernobyl (7)
uranium (9)
alpha (60)
beta (62)
counter (25)
safety (186)
nuclear energy (8)
fallout (15)
minerals (26)
cooking (307)
biology (277)
food (392)
japan (187)
stars (93)
decay (14)
atom (52)
neutron (21)
cold war (35)
Show More