Rutherford's gold foil experiment Caption Rutherford's experiment provided evidence that the positively charged part of the atom consisted of a tiny, dense object at the atom's center. Notes The history of Rutherford's experiment reveals a wonderful example of a careful, scrupulous scientist working hard to remain focused on observation as the basis for his conclusions: It would have been very easy for Rutherford to have dismissed the minor differences between what he saw and what he expected to see.
เมื่อ E = พลังงาน (J) m = มวล (kg) c = ความเร็วแสง (c = 3 x 10 8 m/s) ส่วนมากมวลของอนุภาคต่าง ๆ และนิวเคลียสมี หน่วยเป็น u ซึ่ง 1u = 1.66 x 10 -27 kg เมื่อ 1u คำนวณหาพลังงาน จะได้ 931 Mev ( อ่าน Mev ว่า เมกะอิเล็กตรอนโวลต์ ) ซึ่งของ 1 Mev = 1.6 x 10 -13 J E = mc 2
The Binding Energy of a Nucleus http://sol.sci.uop.edu/~jfalward/nuclearphysics/nuclearphysics.html
Albert Einstein (1879-1955) Albert Einstein (March 14, 1879 – April 18, 1955) was a German- born American theoretical physicist who is widely regarded as the greatest scientist of the 20th century. He proposed the theory of relativity and also made major contributions to the development of quantum mechanics, statistical mechanics, and cosmology. He was awarded the 1921 Nobel Prize for Physics for his explanation of the photoelectric effect and "for his services to Theoretical Physics". http://www.mlahanas.de/Physics/Bios/AlbertEinstein.html