Helix Nebula

“I do not sleep well. My mind will not let me. It is going night and day. There is no more tyrannical thing than a mind that is accustomed to thought. It really seems to resent me falling asleep. It pounds for attention until I wake up again.“

–Nikola Tesla

“Tesla Predicts New Source of Power In Year.” New York Herald Tribune. July 9, 1933.

Stenciling with atoms in 2-dimensional materials possible

The possibilities for the new field of two-dimensional, one-atomic-layer-thick materials, including but not limited to graphene, appear almost limitless. In new research, Penn State material scientists report two discoveries that will provide a simple and effective way to “stencil” high-quality 2D materials in precise locations and overcome a barrier to their use in next-generation electronics.

In 2004, the discovery of a way to isolate a single atomic layer of carbon – graphene – opened a new world of 2D materials with properties not necessarily found in the familiar 3D world. Among these materials are a large group of elements – transition metals – that fall in the middle of the periodic table. When atoms of certain transition metals, for instance molybdenum, are layered between two layers of atoms from the chalcogenide elements, such as sulfur or selenium, the result is a three-layer sandwich called a transition metal dichalcogenide. TMDs have created tremendous interest among materials scientists because of their potential for new types of electronics, optoelectronics and computation.

Read more.

how to physics

magic.

Get you best paper, cut a circle and fold it so that the circumference falls on a fixed point inside. Repeat, using random folds. Now see the creases. This is how you paper-fold an ellipse.

What Is a quantum leap?

A quantum leap is an election jumping up an energy level. When the electron jumps up - it does not exist until it reaches the next energy level. When it falls back down an energy level - it releases the energy as light.

Auburn 852 Boat-tail Speedster

Ferns

Ferns are more advanced primitive vascular plants. They have true roots, stems, and leaves. Ferns do not have seeds, but produce spores instead. Fern’s lifecycle, unlike primitive non-vascular plants such as bryophytes, is dominated by the sporophyte generation. Some interesting terminology associated with ferns are frond, pinnae, sori, rhizome, and fiddlehead. A frond describes the entire blade of the fern and the smaller individual leaflets are called pinnae. Sori describes clusters of sporangia on the underside of the pinnae (Sori are depicted in the second photo). A rhizome is an underground stem that puts out shoots and adventitious roots. Fiddleheads are furled fronds of a young fern.

Click for more vintage cars, hot rods, and kustoms

The best vintage cars, hot rods, and kustoms