spring-of-mathematics:

Mathematically Correct Breakfast - How to Slice a Bagel into Two Linked Halves. If a torus is cut by a Möbius strip it will split up into to interlocking rings.

It is not hard to cut a bagel into two equal halves which are linked like two links of a chain. Figure 1:

  1. To start, you must visualize four key points.  Center the bagel at the origin, circling the Z axis. A is the highest point above the +X axis.  B is where the +Y axis enters the bagel. C is the lowest point below the -X axis.  D is where the -Y axis exits the bagel.
  2. These sharpie markings on the bagel are just to help visualize the geometry and the points.  You don’t need to actually write on the bagel to cut it properly.
  3. The line ABCDA, which goes smoothly through all four key points, is the cut line.  As it goes 360 degrees around the Z axis, it also goes 360 degrees around the bagel.
  4. The red line is like the black line but is rotated 180 degrees (around Z or through the hole). An ideal knife could enter on the black line and come out exactly opposite, on the red line. But in practice, it is easier to cut in halfway on both the black line and the red line. The cutting surface is a two-twist Mobius strip; it has two sides, one for each half.
  5. After being cut, the two halves can be moved but are still linked together, each passing through the hole of the other.

It is much more fun to put cream cheese on these bagels than on an ordinary bagel. In additional to the intellectual stimulation, you get more cream cheese, because there is slightly more surface area.
Topology problem: Modify the cut so the cutting surface is a one-twist Mobius strip. (You can still get cream cheese into the cut, but it doesn’t separate into two parts). See more at: Mathematically Correct Breakfast: How to Slice a Bagel into Two Linked Halves by George W. Hart.

Images: How to Slice a Bagel into Two Linked Halves by George W. Hart - Cutting bagels into linked halves on Mathematica. - Interlocking Bagel Rings

Maybe, that’s one of the reasons why I love bagel :)

(via thisisanerdfighterreference)

mintleaftea:

Stage Managing is like juggling flaming chainsaws while riding a unicycle, where the actors and designers keep throwing more chainsaws at you and then the director yells at you for not turning on the green chainsaw even though the only chainsaws you have are red

(via highguardmyheart)

i-might-be-misha:

jewsjewsjews:

My favorite line in Harry Potter. 

Just a slight diversion

(via lion-hearted-girl-)

staceythinx:

The Midnight Planétarium watch was a collaboration between Van Cleef & Arpels and Christiaan van der Klaauw. The watch is made of 396 separate parts and features the six closest planets orbiting the sun in real time (Uranus and Neptune were left out because you probably won’t live long enough to see either one complete a full orbit).

(via lion-hearted-girl-)

afp-photo:

IRAN, Tehran : An Iranian woman looks at a mural drawing of spearmen bearing the faces of (From L to R): Iraq’s late president Saddam Hussein, United Nations Secretary General Ban Ki-moon, a masked man, US President Barack Obama, Israeli Prime Minister Benjamin Netanyahu and German Chancellor Angela Merkel on a street in the Iranian capital Tehran on July 30, 2014. Iran’s supreme leader Ayatollah Ali Khamenei urged the Islamic world on July 29, 2014 to arm Palestinians to allow them to counter what he called Israel’s “genocide” in the Gaza Strip. AFP PHOTO/BEHROUZ MEHRI

(via gettyimages)

mymodernmet:

The Hanging Tent Company has created the roomoon, a sphere-shaped, portable tent that hangs from tree branches.

(via beyondthefourth)

redheadedmadness:

castleisaidlegs:

darladeville:

watchtheright:

iwasboredsohereiam:

takingshotswithjustinbieber:

freewriterandnaturelover:

eversolightly:

There is a place. Like no place on Earth. A land full of wonder, mystery, and danger!

The Last Bookstore
Los Angeles, California

This place is on my bucket list to visit.

this is the only place i buy books from anymore ((and im going there tomorrow i need some new trashy romance novels)))

cool fact: up on the second floor, 1 book only costs $1. and the amount of cool books up there is endlessssss. so if you have $5 to spend well lucky you

This place looks, like it smells sssoooo gggoooodd

Going.

Also going here!

Someone take me there and I’ll love you forever.

I’ve been there and they not only have books but little art and sewing/stitching classes and small art gallery thingies up on one of the higher floors.
Fun fact: the building used to be a bank and they have this actual vault that, if closed, will not open again and in the vault they keep all the crime novels and it’s super fucking rad

(via being-beckeroni)