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The Boltzmann Constant

The Boltzmann constant is a constant that relates temperature and energy. More specifically: "the average relative thermal energy of particles in a gas with the thermodynamic temperature of the gas." It is named after its discoverer, Ludwig Boltzmann, and was officially declared one of the seven defining constants in for SI units in 2019. The value is approximately 1.38x10^-23 J/K.

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Fewer people contracted HIV last year than at any point since the rise of the disease in the late 1980s, the United Nations said Tuesday, wa

Fewer people contracted HIV last year than at any point since the rise of the disease in the late 1980s, the United Nations said Tuesday, warning that this decline was still far too slow. Around 1.3 million people contracted the disease in 2023, according to the new report from the UNAIDS agency. That is still more than three times higher than needed to reach the UN's goal of ending AIDS as a public health threat by 2030. Around 630,000 people died from AIDS-related illnesses last year, the lowest level since a peak of 2.1 million in 2004, the report said ahead of World AIDS Day on Sunday.