Our well-received second 24-lecture series continues! This time the engaging Sean Carroll is the lecturer, recorded on DVD by the Great Courses Company. For our May 9th meeting, we'll have Lectures 5 and 6..
5. Galaxies and Clusters
Applying the laws of dynamics to galaxies and galaxy clusters, we find that more matter is required to account for their motions than can be observed. Some of the missing mass is hot gas; however, this is still not enough, and we need to invoke some new kind of particle in galaxies and clusters: dark matter.
6. Gravitational Lensing
Another way to detect invisible matter is to use light as a probe of the gravitational field. Passing through curved spacetime, the path of a light ray is deflected due to gravitational lensing. Lensing demonstrates the existence of gravitational fields where there is essentially no ordinary matter.
Many thanks to core NYPG member, Avo for being moderater for this series!
Btw..there will be a quiz sent to those who have RSVPd. See y'all Friday!
Whether you're an expert or a neophyte in whatever Physics topics we cover, it will be an interesting meeting for all. Come join us on the 2nd Friday of the month and share and discuss your Physics interest and knowledge and have fun while you do!
If your not a member already, sign up so you can as a member contribute to the feedback that makes the group mutually viable..and members, do RSVP for our next meeting..and don't forget "The Afterwards"!"
If members are interested in making a presentation about a favourite physics discipline to our Physics Group, we'll love to hear from you! Many thanks to members who have already committed to making future presentations. And of course your suggestions and ideas are welcome.
Here's how to get to the Meeting:
By Subway: Take Yonge St. line north to ‘North York Centre’ station. Remain on the Lower Level, follow the signs to the North York Civic Centre. Or go outside overground to the North York Civic Centre - on the West side of Yonge Street (just behind Mel Lastman Square).
By Car: From highway 401, exit North on Yonge St. past Sheppard Ave., turn left at Park Home Ave, then left at Beecroft Rd. Entrance to underground parking is on the left. Parking fee is around $3.00. Follow the signs to the Civic Centre on the lower level.
If your still not sure how to get to the meeting, email Betty for directions.
Hope to see you at our next meeting. Out of respect for special guests, we like to start at 6:30 pm sharp. And don't forget the Afterwards!
Betty and Mohsen