Sunday, 8 March 2015

Octant History, San Diego Maritime Museum

"In the year 1700, Isaac Newton conceived the idea of measuring the altitude of a colonial body by bringing an image to the horizon by the use of mirrors. Thirty years later, John Halley in England and Thomas Godfrey in America independently invented octants using this principle."

Wednesday, 4 March 2015

Crisps, London Heathrow

Changing LaTeX Margins

\usepackage[
top    = 2.75cm,
bottom = 2.50cm,
left   = 3.00cm,
right  = 2.50cm
]{geometry}

source: http://www.latex-community.org/forum/viewtopic.php?f=47&t=9531&p=36543

Tuesday, 3 March 2015

Quiche by Julien


Eggs, ham, onion, pastry crust.

LaTeX: Scale Image to Page Width

\includegraphics[width=\columnwidth]{path-to-file}

\textwidth also works for single columns.

source: http://tex.stackexchange.com/questions/39147/scale-image-to-page-width

Monday, 2 March 2015

Sunrise+Sunset Observation

Recently, the days have been getting longer. Sunrise comes earlier and sunset occurs later. Looking at the recent [rapid noticeable] elongation of the day in March, and how the temperature is rising rapidly, we can guess that we sit on the smaller-sector side of our orbital ellipse.

From Kepler's second law, "A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time."

Verifying on a seasonal orbit diagram for March, we are indeed closer to the periapsis than the apoapsis.



Working backwards from experimental data may have resulted in deducing an elliptical orbit, eventually leading to how these laws were established.

source: http://upload.wikimedia.org/wikipedia/commons/thumb/f/f0/Seasons1.svg/2000px-Seasons1.svg.png
http://en.wikipedia.org/wiki/Kepler%27s_laws_of_planetary_motion