Responding to COVID-19: Weaver Library is open Sunday through Thursday 9am-9pm, and Friday and Saturday 9am-5pm. You can also contact us by chat, text, and email during those hours. We’re providing limited services in the Main Library lobby. The Health Sciences Library is open to Health Sciences affiliates.Learn more about access during COVID-19.
Find critically evaluated scientific and technical data from the National Institute for Standards and Technology. Available data includes physical constants, atomic and molecular data, properties, and substances.