Todhunter, I., and Pearson, K., "A History of Elasticity and Strength of Materials" (Cambridge Univ. Press, vol. 1, 1986).

Troy Segal is an editor and writer. She has 20+ years of experience covering personal finance, wealth management, and business news. Toby Walters is a financial writer, investor, and lifelong learner.

Will Kenton is an expert on the economy and investing laws and regulations. He previously held senior editorial roles at Investopedia and Kapitall Wire and holds a MA in Economics from The New School ...

All three kinesin transport families exhibit unexpectedly slow dissociation under load, explaining robust competition with dynein during bidirectional cargo transport.

Antonio Nusa's wing-play was key to Norway's success against Ivory Coast Molly Darlington/Getty Images What made Norway and Ivory Coast a fascinating tactical match-up heading into the round of 32 was ...

Heat transfer is the physical act of thermal energy being exchanged between two systems by dissipating heat. Temperature and the flow of heat are the basic principles of heat transfer. The amount of ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. As heat waves get more ...

Pansexual means you can be attracted to people of all genders, including those who don’t identify with any gender. Many pansexual people describe attraction based on personality rather than gender.

We all have an internal list of those we still don't understand, let alone appreciate. We all have biases, even prejudices, toward specific groups. In our workshops we ask people to gather in pairs ...

Polyendocrine metabolic ovarian syndrome (PMOS, formerly PCOS) is a condition that affects between 6 and 15 percent of women of childbearing age. If you’re diagnosed with PMOS, it may be more ...