Tuesday, November 21, 2017

Tryptophan & turkey

Eating turkey on Thanksgiving makes you sleepy because of the high levels of tryptophan (one of the nine essential amino acids) in the meat, right?? Most likely not.
(Image source: Wikipedia)

While the conclusive verdict is still out, a little critical thinking and knowledge of food chemistry, physiology, and psychology reveals that the carbohydrates and relaxation of usual restraints during the holiday have more to do with the drowsiness than the turkey. In fact, cheese has more tryptophan in it than turkey and other meats like beef and chicken have about the same amount.

Read a more detailed discussion of this at Blog Around the Clock on Scientific American Blogs.

More Information
Try OneSearch, a new integrated discovery tool that searches not only CardCat but also the BSU databases.

Thursday, August 17, 2017

Information Locker: Total eclipse 2017

Image by Michael Zeiler at www.GreatAmericanEclipse.com &Fiske Planetarium
The SHSL's Information Locker for the solar eclipse on Monday, 21 August 2017 in the United States:

What time in Muncie?
  • Start (the edge of moon touches the edge of the sun): 12:59:13pm
  • Maximum: 2:25:53pm
  • End: 3:48:54pm
How much of the sun will be covered in Muncie? 
  • At maxiumum coverage, the sun will be 89% blocked by the moon in Muncie
Place of greatest totality (ie 100% coverage for longest time)?

Eclipse: The sun revealed, Charles W. Brown Planetarium programs at Ball State University
  • DATES: August 18 & 19
  • TIMES: 6:30pm (all shows)
2017 Partial Solar Eclipse information, Charles W. Brown Planetarium, Ball State University

Eclipse 2017, from NASA

More than just about the eclipse, it's a virtual space to connect users with cutting edge space exploration experiences

Eclipse 2017.org
Detailed, geographical information on the path of the eclipse.

Solar Vision app by Space Science Institute
available via...
...Google Play Store
...and iTunes

Totality App by Big Kid Science

Ball State University Libraries Resources
Call number ranges for books about eclipses

Keywords for searching CardCat and OneSearch:
eclipse, solar eclipse, annular eclipse, solar occultation, totality

Wednesday, June 21, 2017

Summer Solstice 2017

Earth northern hemisphere solstice graphic from WikiCommons
{image from WikiCommons}
21 June 2017 marks the summer solstice- the longest day of the year. There will be approximately 14 hours and 59 minutes of daylight today here in Muncie, Indiana.

This means that the sun appears furthest north in the sky and the time between sunrise and sunset is the greatest providing the most daylight hours for the whole year. For example, sunrise was 6:12 am this morning and sunset will be 9:14 pm. On 21 September, three months from now, sunrise will be 7:28 am and sunset will be 7:40 pm (do your own calculations at the US Naval Observatory)- almost 3 hours more daylight (2 hours, 48 minutes, to be exact).

More information from...

...Ball State's University Libraries
Do keyword searches in CardCat for "vernal," "spring," "autumnal," or "fall" "equinox," or "soltices." You can also type in terms such as "astronomy" or "seasons" for more general information.

You can also find books on this subject and astronomy in general on the shelves under call numbers beginning with Q14 (encyclopedia, dictionaries, glossaries, etc.) or QB63-65 (field guides, star charts, manuals, etc.).

...External Links

"The Egg and the Equinox" and "The Longest Day" from Phil Plait's Bad Astronomy

"Summer Solstice" from Wolfram Research

Earth's Seasons: Equinoxes, Solstices, Perihelion, and Aphelion from the US Naval Observatory

"June Solstice: Longest and Shortest Day of the Year" from Time and Date

"7 Fun Facts About the Summer Solstice" from the Old Farmers' Almanac