Archive for the YouTube Category

Watch “Why the Universe is quite disappointing really – Episode 6” on YouTube

Posted in The Universe and Stuff, YouTube with tags , , on June 30, 2020 by telescoper

I had to suspend the production of these videos for a month or so while I dealt with examination matters, but after that short hiatus, here is Episode 6 during which I explain just how weak and feeble the force of gravity really is. Combined with the fact that the Universe has such a low density (see Episode 5), the weakness of gravity means that the cosmos evolves extremely slowly.

Watch “Why the Universe is quite disappointing really – Episode 5” on YouTube

Posted in The Universe and Stuff, YouTube with tags , , , on May 21, 2020 by telescoper

Episode 5, in which I explain using a golf ball just how empty the Universe is. It is so empty, in fact, that even the crowded places are very empty. And as for the empty places, they’re practically nothing.

Watch “Why the Universe is quite disappointing, really – Episode 4” on YouTube

Posted in The Universe and Stuff, YouTube with tags , , , , on May 19, 2020 by telescoper

Episode 4, in which I show that spiral galaxies are very grubby – they contain huge amounts of dust. And not only galaxies – astronomical dust is everywhere we look. The Universe may be big, but it sure is dirty..

How to Solve Physics Problems

Posted in Cute Problems, Education, Maynooth, The Universe and Stuff, YouTube with tags , , on May 14, 2020 by telescoper

Since the examination period here at Maynooth University begins tomorrow I thought I would use the opportunity provided by my brand new YouTube channel to present a video version of a post I did a few years ago about how to solve Physics problems. These are intended for the type of problems students might encounter at high school or undergraduate level either in examinations or in homework. I’ve tried to keep the advice as general as possible though so hopefully students in other fields might find this useful too.

Watch “Why the Universe is quite disappointing, really – Episode 3” on YouTube

Posted in The Universe and Stuff, YouTube on May 12, 2020 by telescoper

Why the Universe is quite disappointing really – Episode 3, in which I give two examples of biological systems that are inefficient and poorly designed. If these are the product of intelligent design, the designer clearly wasn’t concentrating.

Watch “Why the Universe is quite disappointing really – Episode 2” on YouTube

Posted in The Universe and Stuff, YouTube with tags , , on May 8, 2020 by telescoper

Episode 2, in which I explain how stars limp along unimpressively, making very poor use of the resources available to them, not doing a very good job at what they’re supposed to be doing, and then they die.

Just like people really…

Watch “Why the Universe is quite disappointing really – Episode 1” on YouTube

Posted in The Universe and Stuff, YouTube on May 6, 2020 by telescoper

Episode 1, in which I explain why stars are not very good at generating power and that a couch potato radiates more energy per kilogram than the Sun.

https://t.co/elGMl468hq

Watch “Why the Universe is quite disappointing really – Introduction” on YouTube

Posted in The Universe and Stuff, YouTube on May 4, 2020 by telescoper

Testing YouTube

Posted in Biographical, mathematics, YouTube with tags , , on May 3, 2020 by telescoper

To do something a bit different during this Covid-19 lockdown I decided to set up my very own YouTube channel to which you may (or may not) wish to subscribe.

I’m new to this so I posted a short video to test how it works. It’s a little video explainer about Cramer’s Rule in linear algebra I made using Screencast-o-matic. I’ve done a lot of these over the past few weeks but they’re not what the channel is about: I posted this example is just to try out the system (mainly to see how long the upload would take).

I put this up yesterday and I’ve already amassed five subscribers so I’m well on the way to becoming a YouTube sensation. I may even become viral so please ensure that you practice social distancing while watching the videos.