History of measurement

Does it Screen? Alexander Hamm Period 2 Ms. Ulrich 11/29 (Graphic that represents the lab) Abstract: My experiment is about testing which brand of sunscreen works best, Equate, Banana Boat, or Coppertone. These sunscreens are available at different prices at most any market. The procedures of the experiment were not very complicated, and should be easy to reproduce. First, you put 20 UV sensitive beads into a plastic bag, and put a thick layer of 50 SPF sunscreen on the…

developed and changed since its early stages during earth’s history. For instance, as a species evolves over time they begin to develop new traits though they also begin to lose other traits. Basically evolution is change. However, evolution is only seen as a reliable theory. Evidence that scientist have to prove evolution as a reliable theory are fossils and relative dating. In this lab report, I measured 11 skulls and based on the measurements, I will try to either prove if my hypothesis of…

Metabolism is a complex process in organisms that convert the food into energy for organism to function properly. Metabolic rate is typically defined as the amount of energy the organism is currently using to maintain the activity (Perkin, 2015). Since metabolism is a key in sustaining the organisms’ life, we decided to investigate the experiment about metabolic rate caterpillar, Manduca sexta. There are many techniques used to measuring the metabolic rate, but there are only best method that…

Before we talk about measurement scales and why they matter we should first explain what they are. A compound measure allows us to measure different aspects of a topic people would find complex. This topic could range from stem cell research to abortion to gun control. The good thing about compound measures is they have a general reliability to them. What I mean is, if an error is made it often does not make the whole measurement go wrong. Compound measures should have several different…

To get the best possible measurement, learners will be measured at three different times. First for a baseline, each tool will be used before learners take the training. A week or two after training is completed, quizzes will be sent to managers while surveys are sent out to employees and 360-degree feedback sessions are scheduled. The third measurement will take about a month and a half after training and the same actions will be taken with the second measurement. Trainers are hopeful for…

11a, lab 1: Motion, Measurement and Statistics In the first lab we will investigate the motion of a ball rolling down an inclined plane. We will use this simple system to investigate the concept of systematic and random measurement uncertainties to understand how much we can trust a measurement. We will then compare the experimental outcome with theory. I. Ball on an inclined plane: Measuring motion We want to measure the motion of a ball that rolls down on an inclined plane…

Discussion In order to find the rate of osmosis at each trial, the initial mass and the final mass were determined using an electronic balance. These values were then subtracted from one another and divided by the time left in the solution, which was 20 minutes. The formula used for this process was: The general trend of the graph is that for every increase in size, there is an increase in the Rate of Osmosis. At 1cm x 1cm the points are reasonably close to one another, with the value of 110…

under a torsional load. The device will also need to collect data and calculate the angle of twist of the sample. A significant part of the device design is the data acquisition and angle of twist measurement. The purpose of this tech memo is to research possible options for data acquisition and measurement of the angle of twist that can be used in the design of…

using the scientific process one of the most essential components is comparing theory to actual measurements. This relies on the accuracy and uncertainty of the measurement itself. If an actual measurement proves the theory wrong it you must know the uncertainty so you can try to figure out where the error took place. Uncertainty can arise from a few different areas; they are statistical variation, measurement precision, or systematic error. Systematic error is in most cases human error like…

One of the objectives of this research is to develop a tool in Java programming language. Following the stated objective, CBPTT was developed in Java language and integrated using the NetBeans IDE 8.0.2 software. In order to show how pairwise combination strategy and constraints strategy was implemented in CBPTT let consider the example illustrated in Table 1.1. There are three parameters with quantity of 2, 3 and 3. These parameters are input as string which is presented as {2,3,3}. From this…