found by Hans Oersted, that when an electric current flows in a wire, the current creates a magnetic force around this wire. It is also known that a solenoid produces a considerably large amount of magnetic force when a current flows through it (diagram 1.1 ). By using a solenoid and some small, light rings of copper and aluminum, it is said that the ring when placed over the solenoid when current is flowing will 'jump' up and sometimes levitate if the force of the magnetic field equals that of the
census. Each punch card contained the data of each individual. Operators fed the countless cards into the computer. When the spring-mounted nails of the computer passed through the holes of the punch-card, an electric circuit was completed. As seen in diagram C, the results of each card were displayed on rows of dials. Hollerith’s company, the Tabulating Machine Company, was eventually sold and was renamed the International Business Machines Corporation (IBM) in 1911, which still exists today. The first
starting to read books on science. He met a poor scholar who helped Einstein in his studies. The scholar’s name was Max Talmud. To boost Einstein’s knowledge, he gave Einstein several hard problems. One of them was to prove the Pythagorean theorem. (See Diagram 1.) In 1894, Einstein’s family moved to Milan, Italy, but Einstein had to stay in Munich to finish his studies. Before the end of the school year, which was six months after his parents left, he was told to leave the gymnasium because of his disrespect
path, each transition is fired with a 5 cents coin and takes 4 firing transitions before candy bar is released from the machine. Fig 18: Vending machine state diagram representation of Petri net b. Producer – Consumer Problem: A Petri net representation of the Producer – Consumer problem has been described below with reference to the diagram. In this system, producer puts information into the buffer and consumer collects and deletes information from the buffer. If the buffer is full, Producer will
1). This area of discussion can cover a broad range of topics from hieroglyphic writing to "Masks and the semiotics of identity." "In semiotic terms, an icon is a variety of sign that bears a resemblance to its object; a diagram, for example, is an icon of that which the diagram represents (Pollock, 1995, p. 1). In Bourland-Davis’ article, she draws from Johnson and Hackman to discuss semiotics as a form of symbolic communication (Bourland-Davis, 1998, p. 2). In Bourland-Davis’ article (Bourland-Davis
amongst the most important techniques in artwork. The ‘Golden Ratio’ is an ancient mathematical method. Its founder is the ancient Greek Pythagoras. (Richard Fitzpatrick (translator) ,2007. Euclid's Elements of Geometry.) The ‘Golden Ratio’ was first mentioned 2300 years ago, in Euclid's "Elements" .It was defined as: a line segment is divided into two sections, ‘a’ and ‘b’ as shown in the diagram below ,when the ratio of a:b is equal to the ratio of a+b:a , the ratio is perfect. The ratio
The Effect of Voltage on a Current Through a Filament Lamp Equipment: · Power Supply. (Ranging from 0V to 6V). · Variable Resistor. · Ammeter. · Voltmeter. · 6V Filament Lamp. · 7 Wires. Definitions: Ammeter - This is a device that measures the current of electrons in Amps. It has to be placed in Series on the circuit. Voltmeter -
seven measurements from 0 to 0.6 grams of sodium bicarbonate doing each test twice. For my experiment I will need the following equipment- Pondweed, Beaker, Water, Lamp, Sodium bicarbonate, Glass rod, Scales and a stopwatch Diagram Carrying
stop radiation at a small thickness. Equipment Strontium 90 beta source GM tube + counter Different thickness of different metals Clamps, bosses and clamp stand to hold the source and the material being tested. Method 1. Set-up equipment as in the diagram 2. Record the thickness and the material being used. 3. Record 5 readings of the radiation count, and record them in a table 4. Replace material being tested with different material or a different sized material. 5. Repeat steps 2 to 4 as required
water tray half full with water. Then I will collect 3g medium chips. I will measure 30cm3 of hydrochloric acid. I will connect the delivery tube to the measuring cylinder which is turned over which will be full with water. This is shown on my diagram. I will begin timing using a stopwatch and record the results every 10 seconds for 1 minute. I will use 0.5molar/dm3 to 3.0molar/dm3 of hydrochloric acid and record 3 sets of results and then I will take an average. Fair Test In order to
1.1 General Construction labour productivity has become big problem in construction industry. In many countries, labour cost comprises 30 to 50% of the overall project’s cost (Yates and Guhathakurta, 1993), and thus is regarded as a true reflection of the economic success. Because construction is labour-intensive industry, significance of this effect not only justifies the concern over its labour productivity, but it can also be argued that labour power is the only productive resource. There are
if I shouted "Three!" they would have to jump. The warm up will last about five minutes, so as not to tire them out. Skills and Practice For a practice/skills based activity, an obstacle course would be set up for them to complete (see diagram) while dribbling a football. They will each get a turn at this, and hopefully, it will prove to be fun as well as good practice. This activity will last about 5 - 10 minutes. [IMAGE] Text Box: The aim of this activity is to practice ball
the higher the temperature rise. I therefore predict the higher the concentration the higher the temperature change. Background knowledge I know that when I add the iron filings to the solution the iron will displace the Copper here is a diagram to show the reaction. [IMAGE] Controlled variables Ø The same mass of Iron filings Ø The same volume of copper sulphate solution Variables Ø Concentration of the Copper Sulphate (CuSO4) Safety Ø Wash hands if you get all copper
harmonic motion of a pendulum can be studied by attaching a ticker-tape to a pendulum bob and analyzing the dots marked on the tape. Theory ------ In this experiment, a string was used to suspend a 0.5 kg mass. [IMAGE] Refer to the diagram above, [IMAGE] Considering the tangential force on the mass, [IMAGE] [IMAGE] ∴The oscillation is simple harmonic. Therefore, we can find out more on simple harmonic motion by analyzing the ticker-tape we obtained after the experiment
and fuel in it. Diagram; Plan; First of all, I will set the clamp stand 3.5cm vertically higher then the crucible which then I put some mineral wool in and 30 drops of the fuel in. After that I am going to weigh the crucible making sure there is no other liquid or any other substances on the weigher, so I don't do not get any anomalous results. After I have recorded the weight I am going to place the crucible directly under the boiling tube, like shown in the diagram, and then I am going
depression for the known masses or the unknown mass. I have kept the way that I have measured the depression the same throughout and to ensure that this is as accurate as possible I have used a protractor to take the measurements, (see 'method'.) Diagram Method The apparatus was set up as shown above.
cm long. * 9 strands of constantan wire, 0.193 mm thick, 30 cm long. * Ammeter, 10 amps max. * Voltmeter, 20 volts max. * Variable resister * Heat proof matt. * 7 wire leads. * 2 crocodile clips. * Ruler. * Scissors. Diagram: Method ====== Firstly collect all the apparatus needed to complete the investigation and set the right apparatus into the correct positions. Start of by measuring the volts and amps of one of the wires at a low resistance, whilst
Problem There is a need to make a fence that is 1000m long. The area inside the fence has to have the maximum area. I am investigating which shape would give this. Triangles: Scalene [IMAGE] The diagram above is not to scale. Instead of having the perimeter to 1000m, only in this diagram, I have made the perimeters of the shape to 10, only to make this part of the investigation easier to understand. We know that the base of all the shapes is 2. The lengths for the equilateral triangle
How to carry out a safe and well thought through investigation. From the pre-test we decided to work with a 2 volts input on a D.C current, with lengths ranging from 10-40 cm and widths of 0.3mm to 0.7mm. Diagram [IMAGE] Method 1. Set up equipment as shown above in diagram 2. Choose decided width and length
average. I predict the time it takes the hydrogen to reach 30cm3 will range from 5s to 25s. I think that the reaction will happen like this Magnesium +Hydrochloric acid> Magnesium Chloride + Hydrogen Mg(s) + 2HCL(aq)> Mgcl2(aq) + H2(g) Diagram ------- [IMAGE] Measuring cylinder [IMAGE][IMAGE][IMAGE][IMAGE] Test tube Hydrogen Pipe [IMAGE]Bung [IMAGE] [IMAGE] [IMAGE]