Incase you didn’t know, Simmons offers select discounts to entertainment around Boston! Here are some ticket discounts you can score! Located in the SAC, grab a friend and explore the city for cheap! @virtualboston #virtualboston
Today I volunteered with #nesacs to kick off #NationalChemistryWeek , themed “Chemistry is Out of This World.” I tabled an activity on “Chemistry of the Stars.” .
Stars look white to the human eye. White is a combination of all colors, but we can separate white into different colors using diffraction glasses. Attendees looked at ceiling lights with these glasses and observed a rainbow. Then they looked at gas tubes, each holding different elements that absorb light at different energies/wavelengths, so distinct colored lines were observed instead.
The appearance of distinct lines instead of a spectrum is due to processes of absorption and emission. When an electron absorbs a photon (particle of light) containing a certain energy/wavelength/color, that color “disappears” from the rainbow spectrum, giving a dark line instead. The electron becomes excited and goes from a ground (S0) state to an excited (S1, etc.) state. The electron’s time in the excited state is short-lived because it’s more stable in the ground state. As it goes from the excited state to the ground state, it emits energy equal to or less than the absorbed energy. The emitted energy appears as a thin line of the corresponding color in an otherwise black spectrum.
Stars are extremely hot. The Sun is 5,700 Kelvin, which equals 5,430°C or 9,800°F. The light that a star emits passes through surrounding gases, and the gases absorb some of that light. We can use absorption spectra to compare stars to each other to see how they are similar or dissimilar. *Bonus fun fact: Did you know that women at Harvard Observatory, led by Annie Jump Cannon, were the first to classify stars into seven groups based on their absorption spectra?
Just like those scientists, attendees matched the spectra of different examples of stars (the Sun, the North Star, etc.) to the typical spectra for each category, grouped by temperature range. Some attendees were surprised to learn that the Sun isn’t the hottest star - the hottest category has stars more than 6x as hot. Overall, it was a great experience, and I learned a lot about stars!
👩🏻🚀🚀🛰🌕☄️🌎👨🏻🚀 I finally got to go to the space exhibit at the @museumofscience! It was so cool, and we even went to the planetarium for the new Mars exploration show. Thanks so much to my dad for coming and listening to me spout space facts the entire time, and for going in the ISS mock-up with me even though it made us both dizzy. This was the best possible way to spend my Sunday morning. #space#mars#moon#museumofscience#astronaut @nasa
Museum of Science, Body Worlds. Exposition of dissected human bodies, animals and other anatomical structures that have been preserved through the process of plastination. These are plastinates of real people! All the muscles, tendons, bones are real, no plastic. These people donated their bodies to science //
Музей науки. Body Worlds. Выставка расчлененных человеческих тел, тел животных и других анатомических структур, которых бальзамировали способом пластинации. Это пластинаты настоящих людей! Все мышцы, сухожилия, кости настоящие, не пластик. Эти люди завещали свои тела науке.
The National Museum of science and technology is awesome. From embodiments of Leonardo da Vinci drawings to a small copy of a Hadron collider in Cern. You can grow wheat with an interactive screen, climb an old locomotive or drive a helicopter, or even feel a member of a submarine crew. It perfectly fits both children and their parents.#liveandlearn#museumofscience
Explore the patterns of nature with Karl Sims’ Reaction-Diffusion Media Wall at Museum of Science Boston! The patterns on the screens are created by equations that use math to simulate two chemicals that react and diffuse. Varying the numbers in these equations creates different shapes and patterns that can be surprisingly complex and that often mirror patterns found in nature.