 |
Watch Online Videos |
 |
|
Video Categories |
|
|
 |
Videos Results: Types of atoms |
 |
|
Total Number Results: 153
| |  | IBM Measures The Force Required To Move Atoms
Author: IBMLabs
Length: 1 minute, 43 seconds
Rating: 4.8   | Description: MADE IN IBM LABS: In a recent paper published in the journal Science, IBM researchers describe a new milestone in nanotechnology: the ability to measure the force required to move individual atoms. Their findings are an important step for understanding what types of atoms are best suited for buildin...More Description: MADE IN IBM LABS: In a recent paper published in the journal Science, IBM researchers describe a new milestone in nanotechnology: the ability to measure the force required to move individual atoms. Their findings are an important step for understanding what types of atoms are best suited for building different kinds of nanoelectronic devices, based on how strong or weak of a bond they can form on different surfaces. The ability to control atoms and move them around on a surface was first discovered by an IBM researcher nearly 20 years ago -- an achievement that has been hailed as the "Kittyhawk of Nanotechnology." But until today, nobody has known the exact force required to move atoms on a surface: an absolutely critical understanding if we are to build Lilliputian computer chips and storage devices from the atom up. The problem is akin to what scientists and engineers needed to learn about construction at macroscopic sizes many decades ago. For example, building a modern bridge would be impossible without first measuring the strength of different materials, understanding the relevant forces, and comprehending how everything interacts. In the nanotechnology realm, to make structures that you want to remain rigidly in place you would use strongly bonded ("sticky") atoms while for groups of atoms that need to move you would use atoms held in place only by weak chemical bonds. IBM is no stranger to working with atoms. Two IBM scientists won the Nobel Prize for their <b>...</b> | | | | |  | Quarks: Inside the Atom
Author: Acorvettes
Length: 2 minutes, 55 seconds
Rating: 4.7891736 | Description: Matter is all the stuff that we see, feel, and smell around us. By definition, matter has mass and takes up space. Matter includes substances such as water, wood, rock, metal, plastic, and air, as well as countless other materials. All types of matter are made up of tiny particles called atoms. Atom...More Description: Matter is all the stuff that we see, feel, and smell around us. By definition, matter has mass and takes up space. Matter includes substances such as water, wood, rock, metal, plastic, and air, as well as countless other materials. All types of matter are made up of tiny particles called atoms. Atoms and the sub-atomic particles they're made of are far too small to be seen, even with the most powerful microscope. Despite this, physicists have developed an understanding of the structure of these particles through experimentation and indirect observation. | | | | |  | Fireworks Ingredients and Types 2008
Author: markdcatlin
Length: 2 minutes, 38 seconds
Rating: 5.0  | Description: Each firework launched into the sky is a precisely formed assembly of chemicals and fuel, carefully calibrated to produce a particular effect a red chrysanthemum spray accompanied by a powerful explosion, or a blue strobe, for example. Understanding how the contents of a firework produce the impress...More Description: Each firework launched into the sky is a precisely formed assembly of chemicals and fuel, carefully calibrated to produce a particular effect a red chrysanthemum spray accompanied by a powerful explosion, or a blue strobe, for example. Understanding how the contents of a firework produce the impressive variety of colors, forms, and sound intensities requires only a simple understanding of chemical reactions. Fireworks generate three very noticeable forms of energy: a tremendous release of sound, bright light, and heat. The tremendous booms heard at ground level are the result of the rapid release of energy into the air, causing the air to expand faster than the speed of sound. This produces a shock wave, a sonic boom. The colors are produced by heating metal salts, such as calcium chloride or sodium nitrate, that emit characteristic colors. The atoms of each element absorb energy and release it as light of specific colors. The amount of energy emitted is characteristic of the element, and the amount of energy determines the color of the light emitted. For example, when sodium nitrate is heated, the electrons of the sodium atoms absorb heat energy and become excited. This high-energy excited state does not last for long, and the excited electrons of the sodium atom quickly release their energy, which is the energy of yellow light. For more on the chemistry of fireworks, go to scifun.chem.wisc.edu Fireworks are used so frequently today in celebrations that it is easy to <b>...</b> | | | | |  | Structure of atom and how is light emitted by an atom
Author: atommodel
Length: 9 minutes, 9 seconds
Rating: 5.0 | Description: Today we know that in an isolated- non-radioactive atom, there are two types of forces acting on its electrons. They are attraction from the nucleus and repulsion between electrons (in hydrogen atom attraction from the nucleus only). But, these forces cannot create constant motion in electrons and s...More Description: Today we know that in an isolated- non-radioactive atom, there are two types of forces acting on its electrons. They are attraction from the nucleus and repulsion between electrons (in hydrogen atom attraction from the nucleus only). But, these forces cannot create constant motion in electrons and so there is no any wave nature for electrons. Since there is no motion, there must be an additional force acting, which prevents the electrons from falling into the nucleus. This fact indicates that the nucleus of an atom is surrounded by a form of matter. I name this mater as space matter. Considering a hydrogen atom, there are two types of forces acting on its electron. They are attraction from the nucleus and buoyant force exerted by space matter. Each element produces its own unique set of spectrum lines when it is excited. So, we can consider an atom of an element consists of a unique series of natural frequencies for its electrons and the electrons in an atom are situated in resonant columns. Inner electrons emit short wavelength radiations and as the distance increases from the nucleus, electrons emit longer wavelength radiations. The shortest wavelength radiation that one atom can emit is the natural frequency of its innermost electron shell* and the longest wavelength radiation is the natural frequency of its outermost transitory shell*. The shortest wavelength radiation that one atom can emit increases with the increasing of its atomic mass. For example the innermost <b>...</b> | | | | |  | How is light emitted, Light emission by an atom: One of the most curious and mysterious phenomenon
Author: atommodel
Length: 9 minutes, 15 seconds
Rating: 5.0 | Description: Before discussing the light emission we need to understand the exact structure of the atom. Main points about atomic structure: 1) The space inside of an atom is filled with space matter. 2) Each of the space matter region that with a precise radius from the centre of the nucleus has unique density....More Description: Before discussing the light emission we need to understand the exact structure of the atom. Main points about atomic structure: 1) The space inside of an atom is filled with space matter. 2) Each of the space matter region that with a precise radius from the centre of the nucleus has unique density. 3) The space matter density in an atom decreases with the increasing of the distance from the nucleus. 4) Electrons in a non-excited atom are motionless. 5) Electron configuration in an atom is determined by three factors. a) attraction from the nucleus b) repulsion between electrons c) buoyant force exerted by space matter. An atom has two types of shells a) Electron shells: - Regions where the electrons are configured in an atom, when the atom in non-excited state. b) Transitory shells: - Possible regions which the electrons can jump from their 'electron shells', when the electrons are in an excited state. * Each of the electron shells and transitory shells in an atom act as resonant columns and has their own unique natural frequencies. * Innermost electron shell has the shortest wavelength frequency and the outermost transitory shell has the longest wavelength frequency that an atom can emit. * Emission of photons by an atom is caused by the oscillation of its electrons and frequency of photons will be the frequency of the oscillating electrons. * There is a 90* angle between the oscillation of electrons and emission of photons. * An atom (of any element) has enormous <b>...</b> | | | | |  | Radiocarbon Dating
Author: stevebd1
Length: 6 minutes, 57 seconds
Rating: 4.8271604 | Description: A video by the The Rafter Radiocarbon Laboratory NZ regarding carbon dating. Full article and more videos- www.eequalsmcsquared.auckland. 'The Rafter Radiocarbon Laboratory has a long history in radiocarbon dating. To determine the radiocarbon age of an organic material it is necessary to measure th...More Description: A video by the The Rafter Radiocarbon Laboratory NZ regarding carbon dating. Full article and more videos- www.eequalsmcsquared.auckland. 'The Rafter Radiocarbon Laboratory has a long history in radiocarbon dating. To determine the radiocarbon age of an organic material it is necessary to measure the proportion of radiocarbon (C14) in the carbon that it contains. The technical problem to be solved is the detection of the rare isotope C14 in the presence of the much more abundant isotopes C12 and C13. The natural abundance of 14C is about one 14C atom per trillion (10^12) atoms of C12. What can you date? Anything containing carbon between 150 and 60000 years old (ie: wood, leather, bone, paper, seawater, gases, ice cores, pollen, pottery, coral, seeds, charcoal, blood residues, sediment, soil, shell, textiles, plant and animal tissue, insect remains, cave paintings, resins and glues).' How it works Carbon-14 has half-life of 5730 years Natural abundance of C-14 is one C-14 atom to one trillion C-12 atomssample is purified physically and chemically in the 'pre-treatment lab' Sample is burnt at 900C turning it into CO2 which is combined with hydrogen and passed over an iron catalyst. Result is pure carbon and water. Graphite carbon pellet is placed at one end of linear accelerator Carbon atoms are 'chipped off' graphite pellet and sent through acceleratorcomputer counts the three different types of carbon atoms at other end of accelerator Ratio of carbon-12 and carbon <b>...</b> | | | | |  | Three Atoms Walked Into A Bar
Author: recombobulator
Length: 5 minutes, 38 seconds
Rating: 4.888889 | Description: A chemistry project about three types of bonding - covalent, ionic, and metallic.
Description: A chemistry project about three types of bonding - covalent, ionic, and metallic. | | | | |  | The space inside of atom is not empty, but filled with space matter!!.
Author: atommodel
Length: 2 minutes, 20 seconds
Rating: 3.6666667  | Description: An experiment for detecting space matter that released in a chemical reaction: When the combustion is taking place in the combustion container, the space matter that released in the reaction will be filled in the space matter collector and flows to the refraction box through the space matter channel...More Description: An experiment for detecting space matter that released in a chemical reaction: When the combustion is taking place in the combustion container, the space matter that released in the reaction will be filled in the space matter collector and flows to the refraction box through the space matter channel. When a light beam is passed through this space matter flow, a shadow effect (shadowgraph) is obtained. In an isolated- non-radioactive atom, there are two types of forces acting on its electrons. They are attraction from the nucleus and repulsion between electrons (in hydrogen atom, attraction from the nucleus only). But, these forces cannot create constant motion in electrons and so the current theory of atom is simply wrong. Volume of atoms and elastic nature of atoms [for example, 1. gas atoms move randomly in high speed and bounce back when they collide with other atoms or its container, 2. the capacity of a material to store thermal energy (oscillation and collision between atoms)] indicate that the nucleus of an atom is surrounded by a form of elastic matter. I name this matter as space matter. List of related videos: The space inside of atom is not empty, but filled with space matter. Evidences of space matter in atoms. How is electric field created? How is magnetic field created? Electron has a standing electric field and magnetic field in right angle. Light is oscillating magnetic line. Light is neither wave nor particle, but it is oscillating string. Oscillation of <b>...</b> | | | | |  | Joseph George Explains New Atom Model (Part-1), Structure of the Atom, New Atomic Theory.
Author: atommodel
Length: 9 minutes, 58 seconds
Rating: 5.0 | Description: The Ruther Fords Alpha particle-gold foil experiment has proved that most of the mass of an atom is concentrated only in a very small region called nucleus. The electrons are assumed to be distributed outside the nucleus. The model was very soon accepted. But soon its drawbacks were also noticed. Th...More Description: The Ruther Fords Alpha particle-gold foil experiment has proved that most of the mass of an atom is concentrated only in a very small region called nucleus. The electrons are assumed to be distributed outside the nucleus. The model was very soon accepted. But soon its drawbacks were also noticed. The greatest drawback about the model was about the stability of the atom as a whole, because it was seen that equilibrium could not be achieved by the operation of electrostatic forces alone between the positively charged nuclei and negatively charged electrons. To account for this difficulty, Ruther Ford proposed that (but without any experimental evidences) electrons revolved around their nuclei in circular orbits with which are just sufficient to balance the attractive force by the nuclei. But unfortunately no scientists have questioned this high-speed motion of electrons around the nucleus and this was the beginning of the development of many misleading theories in the history of physical science. After understanding the instability of the Ruther Fords model, scientists started to think about a series of fixed energy levels for the proposed orbiting electrons. Eventually, Louis debroglie came up with his theory that, matter has wave like property as well as their particle nature. This theory led to the fabrication of many breathtaking ideas like matter waves, standing waves, electron clouds, uncertainty principle etc and all these are resulted in the development of the <b>...</b> | | | | |  | Structure of the Atom: Electrons in a Non-Excited Atom Are Motionless
Author: atommodel
Length: 2 minutes, 30 seconds
Rating: 5.0 | Description: An electron can exhibit wave nature when it is situated in the following circumstances. a) In a background from radio waves to gamma rays. b) In a varying electric or magnetic field. c) When an electron is accelerated [for example, when an electron is accelerated by electric field or magnetic field ...More Description: An electron can exhibit wave nature when it is situated in the following circumstances. a) In a background from radio waves to gamma rays. b) In a varying electric or magnetic field. c) When an electron is accelerated [for example, when an electron is accelerated by electric field or magnetic field (attraction or repulsion) and accelerated by a radioactive nucleus (beta ray)]. We know that, in an isolated- non-radioactive atom, there are two types of forces acting on its electrons. They are, attraction from the nucleus and repulsion between electrons (in hydrogen atom, attraction from the nucleus only). But, these forces cannot create constant motion in electrons and so there is no any wave nature for electrons. Since there is no motion, there must be an additional force acting, which prevents the electrons from falling into the nucleus. Volume of atoms and elastic nature of atoms [for example, 1. gas atoms move randomly in high speed and bounce back when they collide with other atoms or its container, 2. the capacity of a material to store thermal energy (oscillation and collision between atoms)] indicate that the nucleus of an atom is surrounded by a form of elastic matter. I name this matter as space matter. So the additional force mentioned is the buoyant force exhibited by space matter that prevents the innermost electrons of an atom from falling into the nucleus. For the electrons other than one nearest to the nucleus, repulsion with the electrons in the inner <b>...</b> | | |
|
|
|
