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7 godz. temu · Several important consequences follow from the conclusion that the radiations accompany the change. A body that is radioactive must ipso facto be changing, and hence “it is not possible that any of the new types of radioactive matter—e.g., uranium X, thorium X, the two emanations, &c. —can be identical with any of the known elements.For they remain in existence only a short time, and the ...
7 godz. temu · Thomson JJ (1904) On the structure of the atom: an investigation of the stability and periods of oscillation of a number of corpuscles arranged at equal intervals around the circumference of a circle; with application of the results to the theory of atomic structure. Lond Edinb Dublin Philos Mag J Sci 7 (39):237–265.
7 godz. temu · The core is the only region of the Sun that produces an appreciable amount of thermal energy through fusion; 99% of the power is generated within 24% of the Sun's radius, and by 30% of the radius, fusion has stopped nearly entirely. The rest of the Sun is heated by this energy as it is transferred outward through many successive layers, finally ...
1 dzień temu · The exponential function is defined on the entire domain of the complex numbers.The definition of sine and cosine can be extended to all complex numbers via = = + These can be reversed to give Euler's formula = + = When plotted on the complex plane, the function for real values of traces out the unit circle in the complex plane.. When is a real number, sine and cosine ...
