Mostrando resultados por autor "Alan Hall PhD" en Todas las categorías

¿Qué constituye exactamente un átomo? ¿Cómo y por qué se formó el universo a la existencia y cómo terminará todo esto? ¿Qué partículas subatómicas van a constituir el modelo estándar? Este ensayo sirve como punto de entrada a la física nuclear y contiene muchas referencias útiles para otros trabajos sobre este y otros temas relacionados. El ensayo también se ocupa de cosas fascinantes.

Radiation? What's that all about then? Where does radiation come from? What does it do? This audiobook takes a look at the many different types of radiation including radioactivity, X-rays, and other forms of emissions such as cell phone radiation. It also examines the nuclear power industry and the effects that different types of radiation have on living cells. The book is backed up by references to other works on this topic, and every term used is explained in a jargon-free, easy-to-understand fashion.

Will the cosmos and all of the matter and subatomic particles it contains finally ebb away into nothing? Will time itself come to an end? For some unexplained reason, the expansion of the cosmos is accelerating. Whilst scientists think they know how the universe and matter came into existence-they aren't so sure how this massive unravelling puzzle will end up. Other questions are discussed such as, what is the half-life of a proton? What happens to matter and its constituent atoms when the universe ebbs to an end? This essay takes a look at these and other fascinating phenomena.

This discourse takes a look at some vitamins and what has recently been discovered about how they might function in specific diseases such as prostate and breast cancer as well as neurodegenerative diseases such as multiple sclerosis. Other 'essential' substances are also discussed. The work contains a wealth of references pertinent to vitamins and is thus an aid to students or anyone who wants to learn more about vitamins and disease states.

We all know about magnetism right? But hold the phone! Where does this force come from in the first place? Did magnetism play a role in the creation of the universe? Why is this force important in everything from atomic structure to the way solar flares form?

This is Part One of my autobiography. This documents my time at the research bench and spans a period of some 35 years. It's packed with stories about my times at various academic institutions and the people who I've known. This tale does contain some science but it's written in a way that should be easy to understand.

As of yet, nobody can say for sure precisely how the Universe came into existence? What happens to matter and space when gravity gets superstrong? What are neutron stars and what can these superdense objects, tell us about the nature of matter and how black holes are generated? This short essay addresses these and other objects such as pulsars and magnetars. For students, it is also a source of a number of relevant references on these and related topics.

Radiation? What's that all about then? Where does radiation come from? What does it do? This eBook takes a look at the many different types of radiation including radioactivity, X-rays and other forms of emissions such as cell phone radiation. It also examines the nuclear power industry and the effects that different types of radiation has on living cells. The book is backed up by references to other work on this topic and every term used is explained in a jargon-free, easy to understand fashion. This book would be useful to students and laypersons who need to be better informed on radiation.

What exactly constitutes an atom? How and why did the universe come into existence and how will it end? What subatomic particles go to make up the Standard Model? This essay serves as an entry point to nuclear physics and contains many useful references to other work on this and related topics. The essay also deals with other fascinating stuff.

As a result of Paul Dirac and the subsequent work of other quantum physicists, we now know that the void is home to an assortment of so-called 'virtual particles'. We also know that every particle has an antimatter equivalent which, albeit for a fleeting moment, can materialize out of nowhere if given enough energy. This essay takes a look at the world of virtual particles and also discusses some of the theories on how the universe came into being. There is a comprehensive list of references and further reading material.

As a mental disorder, madness lurks within us all. This essay deals with the links between madness, genius, and the self. It takes a look at some famous scientists and mathematicians and their eccentricities. This is a quick guide to how madness arises and more importantly, how we can make sense of madness.

How do we remember things? How does a low voltage current passing through the brain improve our ability to do math? How is brain size and shape related to intelligence? Do smart pills really work? This essay discusses these and other issues relating to brain function.

What are radio waves? How are they able to travel through empty space? Who discovered "side sparks" and "etheric force"? Despite searching the Universe for signals from other sapient beings we have yet to hear from anyone - why so? This essay takes a look at how radio has transformed society and on the topic of contact with extra solar civilizations it asks the question - what if? The work contains some reference to the basic physics of radio and also alludes to other pertinent work.

Electrons are the simplest of sub-atomic particles yet despite being the most studied - we still know relatively little about them. This essay summarizes what some scientists have discovered about the electron and how these leptons interact with other particles. The essay also contains references to other literature on this subject.

This essay deals with the topic of death. It covers a number of famous poisoners and the poisons they dispatched to their victims. In addition to the mechanisms of drug action, the subject of apoptosis (programmed cell death) is also discussed. This essay is therefore a resource which can aid students and the layperson interested in drug/toxin action.

Hidden deep inside the Amazonian jungle, there are tribes that happily exist in a ‘world without numbers’. These so-called ‘primitives’ can get along just fine without the need to count above 5 - apparently they have no money and don’t actually need it. Moreover, scientists who have traveled to study this race of subsistence farmers have emerged with ‘glazed over faces’ as though they have entered a magical realm that is devoid of even the most basic mathematical skills. This poses a question - ‘what have numbers and mathematics done for us?’ Here, I take a look at numbers...

When we look out into the depths of the cosmos, we see that matter isn't evenly distributed. Mixed in amongst the nebulae, galaxies, and whatnot, there are regions that contain massive voids. Some voids are billions of light years in length. One has to ask, then, how visible matter came to be so unevenly distributed. Moreover, why does hadronic matter only account for four percent of the stuff that makes up the universe? This audiobook takes a look at what nothingness is and asks the question - where did everything come from in the first place?

We all wish we had more time. But what is time? How and where did this fourth dimension come about? Can some subatomic particles travel backward in time? What happens to time when gravity gets superstrong? Can the universe go back to the future? This audiobook delves into the nature of time and what some scientists have learned about this strange dimension.

Of all the things we know about the universe, what do we really know about the nature of space? For example, is there a beyond space? Can space exist in the absence of matter? Though it may seem like a dumb question - 'where' does space come from? This essay takes a look at what some scientists have to say on this issue; the work also contains many references on the topic of spacetime and relativity, which should be useful to physics students.

Recently, some doubts have been expressed as to the notion of taking antioxidant vitamin supplements. Also, some recent studies have shone more light upon the Free Radical Theory of Aging and whether or not free radicals are a good or bad thing. This essay examines the effects of so-called antioxidant vitamins, and whether these supplements are beneficial or potentially harmful.