To probe the structure of the atom, Rutherford wanted to devise an experiment to measure the electric charge of a stream of alpha particles hitting a target and scattering, hoping to demonstrate that alpha particles carry a double positive charge. Nuttall to formulate the Geiger-Nuttall Rule in 1912, describing the linear relationship between the radioactive time constant and the logarithm of the range of alpha particles. Working with Rutherford, Geiger demonstrated that in the radioactive decay of uranium, alpha particles of two different energies are emitted, caused by two uranium isotopes. He then moved to England to become a laboratory assistant in Rutherford’s laboratory at the University of Manchester. Young Hans studied physics at the University of Munich and served a stint in the German military before pursuing graduate studies at Erlangen, earning his PhD in 1906 with a thesis on electrical releases through gases. A key element of that experiment was the invention of a reliable device capable of measuring alpha radiation, by Rutherford’s lab assistant, Hans Geiger.īorn in 1882, Geiger was one of five children born to a philosophy professor at the University of Erlangen in Germany. Thomson’s earlier plum pudding model of the atom, and paved the way for Niels Bohr to develop his own atomic model, which continues to play an important pedagogical role today. Rutherford in 1909, which demonstrated experimentally for the first time the existence of the atomic nucleus. But in the interrogation room, answers only lead to more questions in the pulse-pounding conclusion to the Follow Me Back duology.It is impossible to discuss the history of the atom without reference to the famous gold foil experiment spearheaded by Ernest B. But Snapchat… That’s safer, right?Īfter months of living under the radar, Tessa emerges from hiding, forced to face the deadly consequences of her past. She has no intention of ever touching her Twitter app again. His cell phone? Cracked and bloody, buried in the snow.Īgoraphobic fangirl Tessa Hart knows the truth, but she’s finally left her #EricThornObsessed days behind. No one knows what happened to pop icon Eric Thorn. I’ve been so excited for this one to release – it’s the concluding chapter in the FOLLOW ME BACK duology! I read FOLLOW ME BACK last year and loved it – you can see that review here.

Thanks to Sourcebooks FIRE for the advanced copy!

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