Physical Science Fundamentals

 
Coloured glasses for goggles contain lanthanide oxide.

Atomic Hydrogen (H^.) has only one electron which makes it highly unstable. Whereas molecular Hydrogen has covalent bond which includes sharing of electrons between two hydrogen atoms. This becomes very stable condition like He atom. Thats why atomic hydrogen has very small life period.

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">In manufacturing,<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa=""> <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Carborundum is used for its hardness in abrasive machining processes such as grinding and glass casting. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Electrons are responsible for emission of most Electromagnetic radiation because they have low mass, and therefore are easily accelerated by a variety of mechanisms.  

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">The leaf in a room illuminated with red light will absorb the red light too, reflecting no <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">light waves so it will appear black.

Electroplating is an electrolytic process where electrical energy is used to drive a non-spontaneous chemical reaction, converting electrical energy into chemical energy.

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">The name atom comes from the <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Greek word (atomos, indivisible) which means indivisible, something that cannot be divided further. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Due to the relatively dry air less humidity is there in deserts so clouds do not precipitate. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Red color, due to its longer wavelength does not get scattered by the particles in the atmosphere and hence it is used as traffic light. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Choke blocks higher-frequency <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">alternating current in an electrical circuit while passing signals of much lower frequency and direct current by having an impedance largely determined by reactance. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">The Nuclear Fusion Reaction is the basis on which sun releases light and heat. We receive a combination of this heat & light in the form of solar energy. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">In conduction, the heat flows through the body itself, as opposed to its transfer by the bulk motion of the matter. 

Photocell is a device in which the photoelectric effect is used to produce a current or voltage when exposed to light or other electromagnetic radiation. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Water and electricity generally do not mix very well. Using a water fire extinguisher on an electrical fire will almost always present a major shock hazard and should never be considered. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Palladium has the lowest melting point and it is the least dense so it is used in aircrafts. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">In rail transport modeling, a fishplate is often a small copper or nickel silver plate that slips onto both rails to provide the functions of maintaining alignment and electrical continuity. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">The gravitational acceleration on the surface of the Moon is 1.63 m/s², about 16.7% that on Earth's surface. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">The ability to emit light at lower energy levels is due to the valence of the electrons and that is where tungsten and its physical and atomic properties come into play for lighting. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Water attains its maximum density at about 4°C because it is at that temperature hydrogen bonds form. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">Cosmic rays can be emitted by an <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">unstable atomic nucleus (radioactive decay) in the form of a positively charged alpha particle (α), a positively or negatively charged beta particle (β). 

For the most of people, the pain threshold is about 120 db; deafening ear damage can result at 160 db. 

The difference between NOISE and MUSIC is that musical sounds are organised into patterns that have pitch and rhythm. 

<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa;mso-bidi-font-weight:bold="">Vapor density<span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa=""> <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";background:white;mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">is the <span style="font-size:10.0pt;line-height:115%;font-family:Arial;mso-fareast-font-family:"Times" new="" roman";mso-ansi-language:en-us;mso-fareast-language:en-us;mso-bidi-language:ar-sa="">density of a vapor in relation to that of hydrogen. It may be defined as mass of a certain volume of a substance divided by mass of same volume of hydrogen. 

Mica is a bad conductor of electricity but it is a good conductor of heat. Due to the flow of current through the coil, it becomes heated and the heat is transferred to the metal part through mica. Finally, the metal part becomes heated. 

When two mirrors are aligned at a 0-degree angle with each other (i.e. a parallel mirror system), there are an infinite number of images.