How Is Silk Made? Actions Share Share Share to social media Facebook X URL https://www.britannica.com/technology/How-Is-Silk-Made Ask the Chatbot a Question Written and fact-checked by The Editors of Encyclopaedia Britannica Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They...

　　 　　Orchestra An orchestra performing at the Hatch Memorial Shell in Boston. (more) What’s the Difference Between a Symphony and an Orchestra? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/art/Whats-the-Difference-Between-a-Symphony-and-an-Orchestra Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a...

　　 　　Sun without sunspots In January 2018 the Sun had no sunspots for almost two weeks. This spotless period was a prelude to an approaching period of solar minimum in 2019, when the sun's activity was at the low end of its 11-year cycle. (more) How Hot Is the Sun? Ask the Chatbot a Question More Actions Share Share Share...

　　 　　Sugar crops Structures of the sugarcane (left) and sugar beet (right). (more) How Is Sugar Made? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/technology/How-is-Sugar-Made Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar...

　　 　　Mount Rushmore National Memorial Sculpture of Abraham Lincoln under construction in the 1930s, Mount Rushmore National Memorial, southwestern South Dakota, U.S. (more) How Was Mount Rushmore Built? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/art/How-Was-Mount-Rushmore-Built Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article...

　　 　　Paulo Coelho Paulo Coelho, author of Veronika Decides to Die (1998), in 2008. (more) Veronika Decides to Die novel by Coelho Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/Veronika-Decides-to-Die Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a...

　　 　　Iris Murdoch Iris Murdoch, author of Under the Net (1954), in 1987. (more) Under the Net novel by Murdoch Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/Under-the-Net Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required)...

　　 　　Marcus Samuelsson Chef and restaurateur Marcus Samuelsson, 2022. (more) Marcus Samuelsson Ethiopian-born chef Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/biography/Marcus-Samuelsson Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction...

　　 　　William Moulton Marston, a pioneer in developing the lie detector American psychologist William Moulton Marston (seated, right) using the systolic blood pressure deception test, an early version of the lie detector, to check the pulse and blood pressure of James Alphonso Frye (center, wearing a white shirt) in 1926. The photo is a reenactment of Marston's use of the...

　　perseveration psychology Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/topic/perseveration Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar Correction Link Correction Additional Information Other Your Feedback Submit Feedback Thank you for your feedback...

　　 　　Torpedo bat vs. traditional bat The newly designed torpedo bat (left) next to a conventionally shaped bat in the dugout during a Toronto Blue Jays–Washington Nationals game in Toronto, March 31, 2025. (more) What Are Torpedo Bats? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/sports/What-Are-Torpedo-Bats Feedback Corrections? Updates? Omissions? Let...

　　 　　Bioluminescence in a firefly A firefly sends out bioluminescent signal. (more) How Do Fireflies Light Up? Ask the Chatbot a Question More Actions Share Share Share to social media Facebook X URL https://www.britannica.com/science/How-Do-Fireflies-Light-Up Feedback Corrections? Updates? Omissions? Let us know if you have suggestions to improve this article (requires login). Feedback Type Select a type (Required) Factual Correction Spelling/Grammar...