Monthly Archives: August 2014

Outer Orbital Block Periodic Table — This Periodic Table shows the general relationship of each element’s outermost electron orbitals. You can see the trends easily with this table. As the atomic number increases, s orbitals are filled first, followed by p orbitals. The transition elements are the beginning of filling the d orbitals and the lanthanides […]

Periodic Table – Outermost Electron Orbitals

This entry was posted on August 31, 2014 by Todd Helmenstine (updated on September 16, 2022)

Michel Eugène Chevreul (1786 - 1889) — August 31 is Hermann von Helmholtz’s birthday. Helmholtz was a German physician and physicist who made several contributions to modern science. Helmholtz wanted to study physics and mathematics at the University, but financial realities kept him from pursuing this desire. Instead, he began to study medicine because the Prussian army […]

Today In Science History – August 31 – Hermann von ...

This entry was posted on August 31, 2014 by Todd Helmenstine (updated on June 21, 2021)

Jacobus van't Hoff — August 30 is Ernest Rutherford’s birthday. Rutherford is the New Zealand-born British physicist who is considered the Father of Nuclear Physics. Rutherford is directly responsible for a number of important discoveries involving the study of nuclear science and radioactivity. He was the first to outline the rules governing radioactive decay […]

Today In Science History – August 30 – Ernest Rutherford

This entry was posted on August 30, 2014 by Todd Helmenstine (updated on June 21, 2021)

Joe One or Fast Lightning — August 29 is Werner Forssmann’s birthday. Forssmann was a German physician who first inserted a catheter into a person directly into the heart. He was also the first person to have this procedure done. As an intern in cardiology, he believed drugs could be administered directly to the heart with […]

Today In Science History – August 29 – Werner Forssmann ...

This entry was posted on August 29, 2014 by Todd Helmenstine (updated on August 29, 2021)

Eilhard Mitscherlich (1794 - 1863) — August 28 is Godfrey Hounsfield’s birthday. Hounsfield was the English electrical engineer who built the first x-ray computer tomography scanner or CT scanner. Hounsfield studied radio repair in vocational school and basic electronics and radar with the Royal Air Force during World War II. After the war, he attended Faraday […]

Today In Science History – August 28 – Godfrey Hounsfield ...

This entry was posted on August 28, 2014 by Todd Helmenstine (updated on June 21, 2021)

Periodic Table-Metals 2017 — The elements of the periodic table can be broken into three different groups: Metals, Metalloids, and Nonmetals. This periodic table shows the three different groups of elements. The metalloid group separates the metals from the nonmetals. Elements to the left are metals and nonmetals are to the right. The exception is […]

Metals, Metalloids and Nonmetals

This entry was posted on August 27, 2014 by Todd Helmenstine (updated on August 9, 2021)

Carl Bosch (1874 - 1940) — August 27 marks the passing of Ernest Orlando Lawrence. Lawrence is the American nuclear physicist who invented the cyclotron. Lawrence set out to design a more compact linear accelerator. In 1928, a linear accelerator was basically a series of alternating electric coils arranged along a beam of charged particles. Each coil would […]

Today In Science History – August 27 – Ernest Lawrence

This entry was posted on August 27, 2014 by Todd Helmenstine (updated on June 21, 2021)

Today In Science History – August 26 – Antoine Lavoisier

This entry was posted on August 26, 2014 by Todd Helmenstine (updated on June 21, 2021)

Molarity and molality are both measurements dealing with concentration of solutions in chemistry. When you see a bottle marked with either a capital M or a lower-case m, what does it mean? Is there a difference? Yes there is a difference. Molarity is the most common concentration measurement and denoted by […]

Difference Between Molarity and Molality – Understand Chemistry Concentration

This entry was posted on August 25, 2014 by Todd Helmenstine (updated on June 21, 2021)