7.6K views · 261 reactions | Hydrogen bonding - When hydrogen is covalently bonded to a highly electronegative atom, such as fluorine, oxygen, or nitrogen, the H atom has a partial positive charge, written Hδ+. Hδ+ is physically very small, so the density of charge on it is unusually high. | Chemistry | Facebook

Say hello to the #Unitree #H2! This new humanoid robot from Unitree Robotics in China moves with a fluidity that feels unbelievably natural, giving a whole new meaning to the term elegant design. #HumanoidRobot | China Xinhua News