Monthly Archives: August 2014

Today In Science History – August 20 – Fred Hoyle ...

This entry was posted on August 19, 2014 by Todd Helmenstine (updated on November 12, 2025)

Motion in a straight line under constant acceleration is a common physics homework problem. The equations of motion to describe these conditions that can be used to solve any problem associated with them. These equations are: (1) x = x0 + v0t + ½at2(2) v = v0 + at(3) v2 = […]

Equations of Motion Example Problem

This entry was posted on August 19, 2014 by Todd Helmenstine (updated on April 8, 2026)

Johan Gottlieb Gahn — August 19 is John Flamsteed’s birthday. Flamsteed was an English astronomer and first Astronomer Royal. Flamsteed was a good student and was set to go to Oxford but developed severe health problems. While he missed out on University, he continued to study. One subject he particularly enjoyed was astronomy. He […]

Today In Science History – August 19 – John Flamsteed

This entry was posted on August 19, 2014 by Todd Helmenstine (updated on May 14, 2024)

The Atwood Machine is a common classroom experiment showing the laws of motion of two coupled systems undergoing constant acceleration. An Atwood Machine consists of two masses mA and mB, coupled together by a inextensible massless string over a massless pulley. When the two masses are equal, the system is […]

Atwood Machine – Inertia Example Problem

This entry was posted on August 18, 2014 by Todd Helmenstine (updated on March 4, 2025)

Chromatography Fraction Collector. Lambda Omnicoll (Wikimedia Commons) — August 18 marks the anniversary of the discovery of helium. French astronomer Pierre Janssen traveled to India in 1868 to watch a total solar eclipse. Among his equipment was a new device to examine emission and absorption lines associated with the Sun’s spectrum. It was the first total solar eclipse […]

Today In Science History – August 18 – Discovery of ...

This entry was posted on August 18, 2014 by Todd Helmenstine (updated on February 21, 2023)

Complex systems can cause difficulty for students. When two different systems are connected together, there are some factors they share in common. Identifying these connections can make solving problems easier. This example problem has a complex system of two blocks connected by a massless string. Example Problem:Two blocks are connected […]

Inertia Example Problem – Two Connected Blocks

This entry was posted on August 17, 2014 by Todd Helmenstine (updated on April 8, 2026)

Venera 7 Capsule — August 17 is Walter Noddack’s birthday. Noddack was a German chemist who co-discovered the element rhenium. Noddack was investigating platinum ores with Ida Tacke, who would become Ida Tacke Noddack and Otto Berg. They had hoped to fill in some of the holes in the Periodic table, namely the missing […]

Today In Science History – August 17 – Walter Noddack ...

This entry was posted on August 17, 2014 by Todd Helmenstine (updated on October 5, 2024)

Gabriel Lippmann — August 16 marks the passing of Robert Bunsen. Bunsen was a German chemist who, together with Gustav Kirchhoff, developed the study of emission spectroscopy. Bunsen’s early work dealt with the chemistry of cacodyl compounds. Cacodyl has a general structure of (CH3)2As-As(CH3)2. It smells of garlic and is extremely poisonous. It also […]

Today In Science History – August 16 – Robert Bunsen

This entry was posted on August 16, 2014 by Todd Helmenstine (updated on June 21, 2021)

Celsius to Kelvin Conversion — See the steps to convert Celsius to Kelvin. The example problem shows the temperature conversion formula and how to use it.

Convert Celsius to Kelvin Formula and Example Problem

This entry was posted on August 15, 2014 by Todd Helmenstine (updated on September 6, 2021)