Ice Circle

Ice Circle or the circle of ice is a phenomenon that appears in the water that has a slow flow in a cold climate. The shape resembles a giant dish which consists of ice and rotates slowly on the surface of the water.

Fire Rainbow

Atmospheric phenomenon was known as arc circum-horizon or Fire Rainbow, will appear when the sun is high (more than 58 degrees above the horizon).

Fire Fall

"Fire fall" is basically a waterfall, but unique in that get sun exposure so the shimmering golden twilight. This incident is very rare and only a few days a year, usually in February, the sun will highlight a waterfall, creating an orange light like a flame skyline.

Fire Ball

"Fire Ball" an unexplained atmospheric electrical phenomenon. The term refers to reports of luminous, spherical objects which vary from pea-sized to several meters in diameter (Wikipedia).

NAO Robot

"NAO Robot" is an autonomous, programmable humanoid robot developed by Aldebaran Robotics, a French robotics company headquartered in Paris (Wikipedia).

NAO Robot

"Cavendish Experiment" was the first experiment to measure the force of gravity between masses in the laboratory[1] and the first to yield accurate values for the gravitational constant (Wikipedia).

Star Telescope

"Star telescope " A telescope is an instrument that aids in the observation of remote objects by collecting electromagnetic radiation (such as visible light). The first known practical telescopes were invented in the Netherlands at the beginning of the 17th century, using glass lenses. They found use in terrestrial applications and astronomy (Wikipedia).

With My First High School-Students

"When "I was a traning teacher in SMA N Bali Mandara, Indonesia, to complete my assigntment in bachelor degree.

Saturday, December 24, 2011

Physics News: Nobel Prize 2011 by an Israel Scientist! Wonderful Chemist!

Scientists from Israel won the Nobel Prize for chemistry thanks to a remarkable discovery. Scientists managed to break the old understand about the pattern of crystal-forming component. Understand the old saying that the crystal has a repeating pattern forming. However, this discovery succeeded in undermining understands it. It took years to understand Shechtman's new truth by scientists is recognized worldwide.

Physics Concept: Moon as Earth's Natural Satelite

Moon is shown as the beautiful circular light from the Earth. Therefore, in the past time, human realized that the earth is a holy thing. So many people have the great mythology about moon. Some of them call the moon as God, and any other mythology. This is happen because the moon just shown as far object that cannot be reached by human in that time. 

Physics Concept: Atmosphere and Weather

Atmosphere is the layer of air that surrounds the earth. The air is a gas object consisting of a variety of gases, dust, moisture and other particles. This will protect the earths from excessive solar radiation and meteor hit (the rocks) derived from space. In addition, the atmosphere is the medium for the cloud, due to the position of the Earth 32 ½ tilted to the plane of orbit, causing weather patterns are not the same as every part of the world long the year. Movement of air in the atmosphere sometimes also cause havoc such as hurricanes that hit many areas on the surface of this earth. Because of this atmosphere influence eventually evolved sciences such as climatology, meteorology and geophysics.

The atmosphere consists of layers of gas to a height of 80 km of gas composition in the atmosphere can be said uniform. In the dry state of the air composition is largely made up of:
Nitrogen                      78%
Oxygen                       21%
Carbon dioxide           0.03%
Noble gases                 0.936%
Water vapor and dust Uncertain

Physics Concept: The Theory of Relativity

    Frame of reference is the beginning of the emergence of the theory of Relativity. The theory developed by Albert Einstein was a result of his analysis of physical phenomena that have never discussed the existence of a universal reference frame. Frame of reference that is used there are two types, namely inert frame of reference and terms of reference are not inert.

    Frame of reference is not inert shells intended to accelerate. This reference frame used in the general theory of Relativity.
    Inert reference frame is a coordinate system relative to the physical measurements (e.g. mass, velocity, time, length, energy, momentum and so on). A universal reference frame is a system that moves with the speed and direction are fixed (without acceleration).
    Einstein's General Relativity Theory requires a curved space to describe the physical world is using mathematical theory of differential geometry and tensors to describe gravity and quite complicated. This theory has the same form for all observers, both for the observer who is engaged in an inert or frame of reference for the observer who is engaged in an accelerated frame of reference. In general Relativity, gravity is no longer a force (as in Newton's law of gravity) but is a consequence of the curvature of space-time. General relativity showed that the curvature of space-time is due to the presence of mass.