History of measurement

During the microscope lab, my partner and I learned how to properly use a microscope, calculate the field of view, and view and prepare slides. Microscopes are instruments used to view very small objects that cannot be seen with the naked eye. We found that microscopes have many different parts to them, including the diaphragm, ocular lens, and objective lenses. There are three powers of magnification, scanning power (4x), low power (10x), and high power (40x). To find the total magnification,…

Design- In this experiment we selected the happy sack to use for our experiment, as this sort of ball doesn’t bounce when dropped to the ground and this then gives us more accurate data for us to compare with the theoretical time. To record the closest accurate time and distance we could get, the equipment we chose to use, were two stopwatches so that we could compare the human reaction times and a tape measure to correctly measure the distance that the ball is going to fall from; which counted…

nursing characteristics and processes known to be associated with nursing care quality were chosen from the NDNQI database for the Pressure Ulcer and Fall Rate Quality Composite Index validation process” (Boyle, Burman, 2013). In this study, the measurements were focused on pressure ulcer and fall risk rates based on different units and skill mixes. The conceptual definition would be the need for a holistic measuring of hospital acquired…

When thinking positive, you are thinking on the bright side of what can potentially happen. Many people positively fantasize about their futures. Some people who think positive, expect positive results, as we all should. Can those positive thoughts lead to something worse eventually? I have always been taught to think positive, to never let negative thoughts get you down. Always think positive, think it into existence or it will never happen. There are people who have been taught, and…

Boots, he writes about the use of hand and laser measurement devices used at crime scenes. One hand held measurement method that Books writes about is a rolling measurement device. This type of device should be checked against a steel tape measure to compare over various distances. Boots states, "Probably one of the most commonly used devices is a good old-fashioned…

How was Avogadro’s number determined? What are the evidence of international co-operation and evidences used to support the value of Avogadro’s hypothesis (numer)? What is a hypothesis? It is a proposed explanation for a phenomenon, which can be described as ‘provisional'. However, a hypothesis cannot be identified as a prediction; it is a priority for it to allow people to make predictions of experiments that can be tested. If the results from this experiment are coherent with the prediction…

highest activity. However, research shows that pH 7 should have the highest enzyme activity. In every experiment, there are random and systematic errors. A possible systematic error might be that the scales are faulty and did not give accurate measurements of the weight, thus making the results unreliable. A systematic error that did occur was the pH concentrations were not close enough to what they were labelled to be, 3, 5, 7, and 9. A random error that may have occurred was when measuring the…

To do this experiment you will need two subjects that have different arm lengths. In this experiment Subject 1 had an arm length of .81 meters and Subject 2 had an arm length of .77 meters. It is crucial that the subjects have different arm lengths because if they don’t your results will be invalid. The first step in this experiment is to set up the camera using the tripod and insert an SD card. Next, position the camera perpendicular to the sagittal plane along the x-axis in regards to the…

This occurred through passive transport and as there is no correlation between each concentration, there is also no pattern to observed. Precision refers to the closeness of two or more measurements together. In the above table, it is evident that the average weight difference for potatoes that were placed in sucrose (0.00g) and glucose (0.01g) are reliable. This can be shown through the increase of 0.01g as seen above. The potato which was…

the skin, as it picks up electrical signals from the heart through the skin, when it beats. The data will be send then to the wrist band where the heart is displayed and the whole data is collected to review the differences during the period of measurement. (Wood, R. (2015) Measuring Heart Rate) For measuring her blood pressure she might has used an automatic machine. She needs to put her arm in a cuff – where a gauge is fixed- which gets inflated to squeeze the arm. If the cuff is fully…