The physics of time
Time: 10:30 - 13:00
Location: Keeley Street
This course has now finished
- Course Code: HS181
- Dates: 02/03/24 - 09/03/24
- Time: 10:30 - 13:00
- Taught: Sat, Daytime
- Duration: 2 sessions (over 2 weeks)
- Location: Keeley Street
- Tutor: Gary Retallick
Course Code: HS181
Duration: 2 sessions (over 2 weeks)
Please note: We offer a wide variety of financial support to make courses affordable. Just visit our online Help Center for more information on a range of topics including fees, online learning and FAQs.
What is the course about?
In this course, we explore the various different conceptions of time within modern physics. We examine the concept of absolute time proposed by Newton, and see how this contrasts with the relativistic picture required by Einstein’s theories. We consider how time might be quantised, rather than continuous, as implied by some versions of loop quantum gravity and string theory. We see how the arrow of time appears to emerge from thermodynamics, whilst considering to what extent this arrow might in fact be illusory. We consider the origins of time in the big bang. Finally we overview the possibility of time travel, and what limitations exist on such a possibility.
What will we cover?
• Absolute versus relativistic time
• Quantum time
• The arrow of time
• Time and the big bang
• Time travel.
What will I achieve?
By the end of this course you should be able to...
- state and explain the distinctions between absolute and relativistic time
- describe the ways in which time might be quantised
- describe the emergence of the arrow of time from thermodynamics
- explain the origins of time in the birth of the universe
- describe the ways in which time travel might be possible
- state the theoretical and physical limitations on the possibility of time travel.
What level is the course and do I need any particular skills?
No previous knowledge of physics is required, though it may be useful. However, an enthusiasm for learning and an open and critical mind will enhance your enjoyment and benefit from this course.
How will I be taught, and will there be any work outside the class?
Interactive lecture - all information will be supplied via Powerpoint slides which will be made available for download.
Students should be prepared to contribute to class discussion and group work.
Are there any other costs? Is there anything I need to bring?
No other costs. Students who wish to take notes will need pen and paper.
When I've finished, what course can I do next?
Check our website for other science courses.
Dr. Gary Retallick Mathematics and Science Gary obtained his Phd in Philosophy of Physics from Kings College London in 2006. His thesis explored the physics of time, touching upon relativity, field equations, quantum mechanics, thermodynamics and metaphysics. Gary began his teaching career in computing, going on to teach philosophy for the WEA and Mary Ward Centre, and physics and mathematics at both Birkbeck College London and the Open University. He currently teaches various science related courses, spanning topics in physics, chemistry and mathematics, at City Lit. Languages - Cornish Aside from his career in Science, Gary has an ongoing interest in languages, in particular Cornish, the language of his ancestors. He began studying Cornish at City Lit in 1998, and after passing the grade three Cornish exam with distinction he started to assist his tutor, Jo P'rhys. After a number of years as language assistant to the class, Gary was formally appointed as teacher of the Cornish beginners class, allowing Jo to concentrate on the higher level classes. Gary now teaches both the beginners and lower intermediate classes.
Please note: We reserve the right to change our tutors from those advertised. This happens rarely, but if it does, we are unable to refund fees due to this. Our tutors may have different teaching styles; however we guarantee a consistent quality of teaching in all our courses.