Lucid

My other tumblr - http://postithere7.tumblr.com

Mon, 03 Jun 2013 22:55:20 -0400

My other tumblr - http://postithere7.tumblr.com

"I just want to say I’m thinking of you, believe in you, respect you and care for you. Be..."

Mon, 03 Jun 2013 22:45:41 -0400

“I just want to say I’m thinking of you, believe in you, respect you and care for you. Be well.”

- Pamelita

"I just want to say I’m thinking of you and no matter who you are and what you are going..."

Mon, 03 Jun 2013 22:45:23 -0400

“I just want to say I’m thinking of you and no matter who you are and what you are going through, someone in the world believes in you, respects you and cares for you. Be well.”

- Pamelita

"Have fun wherever you are."

Mon, 03 Jun 2013 22:43:46 -0400

“Have fun wherever you are.”

- Pamelita

"I hope everyone is well and enjoying life. Lots of love."

Mon, 03 Jun 2013 22:43:27 -0400

“I hope everyone is well and enjoying life. Lots of love.”

- Pamelita ♥

"Remember, humans make and build reality. If you are a human, you have the power to positively..."

Mon, 03 Jun 2013 22:43:02 -0400

“Remember, humans make and build reality. If you are a human, you have the power to positively change reality.”

- Pamelita

"Are you a human? If yes, then you have the power to positively change the world. This is an..."

Mon, 03 Jun 2013 22:41:09 -0400

“Are you a human? If yes, then you have the power to positively change the world. This is an inherent trait in all humans.”

- Pamelita

"Human, Heal Thyself."

Mon, 03 Jun 2013 22:40:36 -0400

“Human, Heal Thyself.”

- Pamelita

"You are who you believe yourself to be."

Mon, 03 Jun 2013 22:28:34 -0400

“You are who you believe yourself to be.”

- Pamelita

"You are what you repeatedly think and focus on."

Mon, 03 Jun 2013 22:28:19 -0400

“You are what you repeatedly think and focus on.”

- Pamelita

"Your focus is your life."

Mon, 03 Jun 2013 22:27:58 -0400

“Your focus is your life.”

- Pamelita

"Be aware of what you think and focus on - it becomes your obsession, your belief, your faith, your..."

Mon, 03 Jun 2013 22:27:47 -0400

“Be aware of what you think and focus on - it becomes your obsession, your belief, your faith, your life. What you focus on dictates your existence.”

- Pamelita

"What you think of often, even on a subconscious level, controls your outlook. It dictates who you..."

Mon, 03 Jun 2013 22:26:55 -0400

“What you think of often, even on a subconscious level, controls your outlook. It dictates who you allow to surround you, influence you, and dictates all aspects of your daily routine. What you think and do controls your entire way of life.”

- Pamelita

"We are what we repeatedly do. Excellence, then, is not an act, but a habit."

Mon, 03 Jun 2013 22:16:25 -0400

“We are what we repeatedly do. Excellence, then, is not an act, but a habit.”

"You are what you eat."

Mon, 03 Jun 2013 22:15:42 -0400

“You are what you eat.”

"Let food by thy medicine, and medicine thy food."

Mon, 03 Jun 2013 22:15:32 -0400

“Let food by thy medicine, and medicine thy food.”

"It’s cool to be smart."

Mon, 03 Jun 2013 22:15:20 -0400

“It’s cool to be smart.”

"It’s OK to be smart."

Mon, 03 Jun 2013 22:15:12 -0400

“It’s OK to be smart.”

Elastic Wave

Mon, 03 Jun 2013 22:06:58 -0400

Elastic wave, motion in a medium in which, when particles are displaced, a force proportional to the displacement acts on the particles to restore them to their original position. If a material has the property of elasticity and the particles in a certain region are set in vibratory motion, an elastic wave will be propagated. For example, a gas is an elastic medium (if it is compressed and the pressure is then released, it will regain its former volume), and sound is transmitted through a gas as an elastic wave.

http://www.britannica.com/EBchecked/topic/182027/elastic-wave

wave (physics)

Propagation of disturbances from place to place in a regular and organized way.

http://www.britannica.com/related-topics/182027/related-topics-to-elastic-wave

Seismology

Mon, 03 Jun 2013 21:54:18 -0400

Seismology is the scientific study of earthquakes and the propagation of elastic waves through the Earth or through other planet-like bodies. The field also includes studies of earthquake effects, such as tsunamis as well as diverse seismic sources such as volcanic, tectonic, oceanic, atmospheric, and artificial processes (such as explosions). A related field that uses geology to infer information regarding past earthquakes is paleoseismology. A recording of earth motion as a function of time is called a seismogram. A seismologist is a scientist who does research in seismology.

Types of seismic wave

Seismic waves are elastic waves that propagate in solid or fluid materials. They can be divided into body waves that travel through the interior of the materials; surface waves that travel along surfaces or interfaces between materials; and normal modes, a form of standing wave.

Body waves

There are two types of body wave, P-waves and S-waves (both body waves). Pressure waves or Primary waves (P-waves), are longitudinal waves that involve compression and rarefaction (expansion) in the direction that the wave is traveling. P-waves are the fastest waves in solids and are therefore the first waves to appear on a seismogram. S-waves, also called shear or secondary waves, are transverse waves that involve motion perpendicular to the direction of propagation. S-waves appear later than P-waves on a seismogram. Fluids cannot support this perpendicular motion, or shear, so S-waves only travel in solids. P-waves travel in both solids and fluids.

Surface waves

The two main kinds of surface wave are the Rayleigh wave,which has some compressional motion, and the Love wave, which does not. Such waves can be theoretically explained in terms of interacting P- and/or S-waves. Surface waves travel more slowly than P-waves and S-waves, but because they are guided by the surface of the Earth (and their energy is thus trapped near the Earth’s surface) they can be much larger in amplitude than body waves, and can be the largest signals seen in earthquake seismograms. They are particularly strongly excited when their source is close to the surface of the Earth, as in a shallow earthquake or explosion.

Normal modes

The above waves are traveling waves. Large earthquakes can also make the Earth “ring” like a bell. This ringing is a mixture of normal modes with discrete frequencies and periods of an hour or longer. Motion caused by a large earthquake can be observed for up to a month after the event. The first observations of normal modes were made in the 1960s as the advent of higher fidelity instruments coincided with two of the largest earthquakes of the 20th century - the 1960 Great Chilean Earthquake and the 1964 Great Alaskan Earthquake. Since then, the normal modes of the Earth have given us some of the strongest constraints on the deep structure of the Earth.

Source and more information:

http://en.wikipedia.org/wiki/Seismology