D라이브러리

through these, I'll issue you a challenge.1. North Korea's nuclear program. That's a no-brainer for a story. How much plutonium has the North reprocessed from spent fuel at its Yongbyon nuclear complex? How was it able to hide its uranium enrichment centrifuges for so long? And what are the challenges to miniaturizing a nuclear weapon and fitting it atop a Taepodong missile? Don't leave this ...

reactor was found in an ancient streambed in Africa, and the mineral deposits there contained traces of a long-lived Plutonium isotope. This brings the total number of naturally-ocurring elements back up to 91. See THE PHYSICS TEACHER, Vol.27 No.4 p282LIGHT FROM THE SUN IS NOT PARALLEL LIGHTSome books state that light from distant objects is nearly parallel, the more distant the object the ...