He realized that Rutherford's model wasn't quite right ... of position if a charged particle passed by. Bohr turned to Planck's quantum theory to explain the stability of most atoms.

Bohr proposed adding to the model the new idea of quanta put forth by Max Planck in 1901. That way, electrons existed at set levels of energy, that is, at fixed distances from the nucleus.

In 1913, Neils Bohr proposed that electrons in an ... argue may need to be more idealistic. The Standard Model also struggles to explain dark matter and dark energy, which is one of its limitations.

In 1913, Niels Bohr revised Rutherford's model by suggesting that the electrons ... By doing this, he was able to explain that since particular chemicals burn with certain-coloured flames, the ...

Flame Test with Metal Solutions Explained Teacher Edition: Flame tests are used to demonstrate the atomic emission spectra of various ions and to relate discussions of the Bohr atom to phenomena ...

This is called ordinal time preference. It also helps to explain why demand curves are downward sloping in microeconomic models since each additional unit of a product or service is put toward a ...

This course attempts to trace the process by which humans learned how to describe, categorize, model, and manipulate the natural world ... of the formation of the earth’s surface and all those things ...

特斯拉Model Y定位于为中型SUV，同时也是特斯拉的第五款量产车型，其基于Model 3平台开发而来，因此设计风格上与Model 3十分相似。尽管外观很相似，但是车身尺寸方面，Model Y确实要比Model 3要实在很多，Model Y比Model 3长了56mm、宽了71mm、高了181mm、轴距长了15mm ...