UNIT 18: Atoms and Nuclei Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum. Composition and size of nucleus, atomic masses ...

(Thomson’s model/ Rutherford’s model ... Determine the wavelength and frequency of the photon. 6. (a) Using Bohr’s model calculates the speed of the electron in a hydrogen atom in the ...

Philip Ball looks at how a little-known paper by Niels Bohr demonstrates the turmoil in physics on the brink of quantum ...

Rutherford's work with Niels Bohr in the 1920s, predicting the existence of neutrons, was later confirmed in an experiment by Rutherford's colleagues. "John Cockcroft and Ernest Walton developed a ...

The Tesla Model Y is the most popular EV in America, and it’s about to get a major refresh. Tesla has announced the Model Y Juniper, the biggest refresh for the EV since its initial launch.

Now that the new Tesla Model Y Juniper refresh has been fully unveiled and we know all the details, which one do you prefer: the new one or the old Model Y? We are curious to get your opinion on ...

Take the Model 3 and Model Y, for example. Both electric vehicles have been given major makeovers within the past couple of months, keeping the tradition of the mid-cycle refresh alive.

Tesla's updated version of the Model Y is now available to order in the US, Canada, the UK, and mainland Europe — weeks after it was unveiled in China. In the US, the refreshed car, including ...

Our spy photographer spotted a camouflaged 2025 Model Y (nicknamed Juniper) testing on public roads in Europe. KGP Photography While the front and rear bumpers are both wearing disguises ...

But, while it’s larger than the Tesla Model Y, it’s also likely to be a little more expensive. The two vehicles are a bit different when it comes to things like performance, range, and charging.