Our current understanding of the Universe suggests that it is composed of an invisible component called “dark matter”. This mysterious type of matter represents more than 25% of the entire matter and energy of which the Universe is made. The matter that we are used to “seeing” in our everyday life and that represents the building blocks for both our bodies and stars that shine in the sky, represents only 5% of the Universe.
The main thing that drew me to the history and philosophy of science was the simple desire to understand the nature of science. I was introduced to the exciting ideas of Popper, Kuhn, Lakatos and Feyerabend, but it soon became clear that there were serious problems with each of these views and that those heydays were long gone. Professionals in the field would no longer presume to generalize as boldly as the famous quartet had done.
Einstein’s scientific achievements are well known even if not widely understood by non-scientists. He bestrode the twentieth century like a colossus and physicists are still working through his legacy. Besides, the theory of relativity penetrated far beyond science into many areas of literature and the arts. If hard to measure, evidence of his cultural influence is unmistakable.
It has long been the unquestioned assumption of many religious believers that the God who created the world also acts in it. Until recent scientific discoveries, few challenged the idea of how exactly God interacts with the world. With the introduction of Newtonian science and quantum theory, we now know much more about how the world works, and the mode of God’s action has become a serious question for believers.
World Space Week has been celebrated for the last 17 years, with events taking place all over the world, making it one of the biggest public events in the world. Highlighting the research conducted and achievements reached, milestones are celebrated in this week. The focus isn’t solely on finding the ‘Final Frontier’ but also on how the research conducted can be used to help humans living on Earth.
My first degree was in mathematics, where I specialised in mathematical physics. That meant studying notions of mass, weight, length, time, and so on. After that, I took a master’s and a PhD in statistics. Those eventually led to me spending 11 years working at the Institute of Psychiatry in London, where the central disciplines were medicine and psychology. Like physics, both medicine and psychology are based on measurements.
X-ray diffraction by crystalline powders is one of the most powerful and most widely used methods for analyzing matter. It was discovered just one hundred years ago, independently, by Paul Scherrer and Peter Debye in Göttingen, Germany, and by Albert Hull at the General Electric Laboratories, Schenectady, USA.
“It’s not quantum mechanics” may often be heard, a remark informing the listener that whatever they are concerned about is nowhere near as difficult, as abstruse, as complicated as quantum mechanics. Indeed to non-physicists or non-mathematicians quantum mechanics must seem virtually impossible to appreciate – pages of incomprehensible algebra buttressed by obscure or frankly paradoxical “explanations”.
The captivating scent of cakes and the compelling aroma of freshly brewed coffee attract you to a bakery in the morning. A male moth is flittering around, frenetically following the scent plume released by her female. What do these two phenomena have in common? Much more than we suspect, when we look at the molecular level. Imagine if we had a very powerful microscope enabling us to detect details
Our story has to begin somewhere and why not with the Manchester schoolteacher John Dalton who revived the atomic theory of the ancient Greek philosophers? In addition to supposing that the ultimate components of all matter were atoms, Dalton set about putting this idea on a quantitative foundation. He published the first list in which he compared the weights of the atoms of all the elements that were known at the time.
Approximately 500 years ago a Polish lawyer, medical doctor, and churchman got a radical idea: that the earth was not fixed solidly in the middle of all space, but was spinning at a thousand miles per hour at its equator and was speeding around the sun at a dizzying rate. Unbelievable, critics said. If that were true, at the equator people would be spun off into space. And it would be much harder to walk west than east.
Powell’s City of Books occupies 1.6 acres of retail floor space in downtown Portland, Oregon and is one of my favorite places in the world. My first time there, I searched out the chemistry shelves–and was slightly disappointed. I counted two cases of chemistry books sandwiched between biology and physics, which had eight cases each.
The Big Bang theory predicts that there was a powerful repulsive force at the beginning of the expanding of the Universe. A common hypothesis of the cause of the Big Bang is a short-term repulsive field, the so-called “inflanton”. Observations of supernovas have shown that the Universe is still expanding with acceleration.
The Large Hadron Collider (LHC) at CERN has already delivered more high energy data this year than it had in 2015. If any new particle were found, it would open the doors to bright new horizons in particle physics.
Some eight years ago I sat down to draw out a blueprint for a book that should tell stories about how the chemistry of individual elements of the periodic table had changed, for better or for worse, the courses of ordinary peoples’ lives. Several things motivated me; I was sitting on a number of stories where literature and history intersected with chemistry that I would love to tell to a bigger audience
So, what is crystallography? Put simply, it is the study of crystals. Now, let’s be careful here. I am not talking about all those silly websites advertising ways in which crystals act as magical healing agents, with their chakras, auras and energy levels. No, this is a serious scientific subject, with around 26 or so Nobel prizes to its credit. And yet, despite this, it remains a largely hidden subject, at least in the public mind.