Archive for the 'Uncategorized' Category

Saros 145/22: The Great American Eclipse

Next Monday, the shadow of the Moon will bring a two-minute spell of darkness as it sweeps across the United States along a path from Oregon to South Carolina. The eclipse is one of a series known as Saros 145. [TM121 or search for “thatsmaths” at irishtimes.com].

Saros-145

Saros series 145 recurring every 18 years, 10 days and 8 hours.
[Image from www.GreatAmericanEclipse.com ]

Continue reading ‘Saros 145/22: The Great American Eclipse’

RT60 and Acoustic Excellence

This week’s That’s Maths column (TM072) [search for “thatsmaths” at irishtimes.com] is about architectural acoustics, and about the remarkable work of Wallace Clement Sabine.

Boston Symphony Hall. Image downloaded from website: http://www.gourmetcaterers.com/exclusive-venues/symphony-hall

Boston Symphony Hall. Image downloaded from BSH.

Continue reading ‘RT60 and Acoustic Excellence’

2014 in review

2014 annual report of WordPress.com for this blog.

Here’s an excerpt:

The concert hall at the Sydney Opera House holds 2,700 people. This blog was viewed about 37,000 times in 2014. If it were a concert at Sydney Opera House, it would take about 14 sold-out performances for that many people to see it.

Click here to see the complete report.


Last 50 Posts

Categories