My Physics Blog

I am an 18 year old aspiring physicist. I will use this blog to express my understanding of the subject in my own way as I continue to learn.

Review of Dara O Brian’s Science Club [Season 2]

Due to my enthusiasm for all things science, I decided to watch Dara O Brian’s Science Club in my spare time while I do some physics revision to prepare me for my (possible) university interview in December. So far I’ve watched all of the episodes of Season 2 and I’ve decided that I will proceed to watching Season 1 soon. 

For me, the most valuable part of watching the show was seeing how scientists apply the different textbook theories that I may have learnt in my lessons to real life situations. I particularly enjoyed seeing the different uses of light in action: how X-Rays produced in synchrotrons allow microbiologists to see the atomic structure of bacteria which would in turn help them to devise more safe and efficient vaccinations and how shining lasers through a liquid and analysing the light scattered by the liquid can create a graph of the composition of chemicals in the liquid. 

If you’re interested in the latest scientific breakthroughs too, Science Club also covers that. Of course, you could keep up to date by reading the New Scientist magazine too but that is just another positive of the show. 

I would recommend this show for entertainment purposes and not something to revise with as the actual scientific disciplines covered in this show is not very in-depth. However, it’s enjoyable and fun to watch - sometimes shocking too.

:)

— 11 months ago
#review  #science  #club  #dara  #o'brian  #o  #brian  #physics  #chemistry  #biology  #season  #2 
In the spotlight: Albert Einstein

Profile: German, theoretical physicist, 1879-1955

  • Relativity 

    Relativity can be split into two kinds: the special theory of relativity and the general theory of relativity. The special theory of relativity deals with objects and observers travelling at a constant velocity and assumes that speed of light is constant - Einstein showed that the speed of light is independent of the velocities of the observers.  This led to the unification of space and time, called space-time.

    The general theory of relativity includes acceleration. Einstein introduced the idea that there is no such thing as Newton’s gravitational pull, but that a large mass warps the space-time around it, causing space to push other objects towards the large mass. Evidence for this includes the bending of light around a massive object, the shifts in Mercury’s orbit and the Doppler effect. 

  • e = mc² (e = energy, m = mass, c = speed of light)

    This equation describes the amount of energy associated with a given mass. It can be used to calculate the energy given off by a quantum particle split into two.

  • Light/photoelectric effect

    Einstein put forward the idea that light energy is carried in packets; quanta. The photoelectric effect is the act of electromagnetic radiation causing (photo)electrons to be ejected from a metal surface.

Sources: http://www.youtube.com/watch?v=cbX_J62RWGE; http://www.space.com/17661-theory-general-relativity.htmlhttp://science.howstuffworks.com/science-vs-myth/everyday-myths/relativity.htm

— 11 months ago with 5 notes
#spotlight  #physics  #physicist  #scientist  #german  #albert  #einstein  #theoretical  #photoelectric  #effect  #general  #special  #relativity