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The Bluebird Library has been celebrating the lives of famous scientists. Each month, a new scientist is selected and displays are created to feature the discoveries and contribution of the scientist. April’s scientist of the month is Thomas Young; the library wishes to develop a Young’s experient display. The library has purchased a blue laser which emits light with a wavelength of 473 nm. They also have purchased a slide with a double slit; the slit spacing is 44 µm. The library’s current plans are to project the interference pattern onto a white board which is 3 feet wide and located 28 feet from the slits. What is the maximum number of bright spots which will appear on the board at these distances and what is the spacing distance between each bright spot? Assume that each bright spot is bright enough to see. (GIVEN: 1 m = 3.28 ft, 1 m = 106 mm, 1 m = 109 nm) Central to Dorst’s frame creation model (2015 Dorst, K. (2015). Frame innovation: Create new thinking by design. Cambridge: The MIT Press. [Google Scholar]) is the great length that designers go to assess the frameworks through which problems are approached. Complex problems—such as the impacts of artificial nighttime lighting—are often caused by underlying value conflicts, and the inability of current frameworks to adequately address said values. By looking into the origins and history of the problem, the key driving issue, and the current context, a more comprehensive picture of the problem and underlying values emerge. And simultaneously the possibility of new approaches, or frames, will also emerge (Dorst, 2015 Dorst, K. (2015). Frame innovation: Create new thinking by design. Cambridge: The MIT Press. [Google Scholar]). However, for our present purposes we will not search for a new or radically different approach, but rather ask how the coalescing frame of light pollution is responding to our problem. We have our core issue present in the novel challenge described above. The next steps are to examine the origins and current context in turn, so see how light pollution can be improved as an effective frame. Several different types of light sources exist, each having different properties that affect their appropriateness for certain tasks, particularly efficiency and spectral power distribution. It is often the case that inappropriate light sources have been selected for a task, either due to ignorance or because more sophisticated light sources were unavailable at the time of installation. Therefore, badly chosen light sources often contribute unnecessarily to light pollution and energy waste. By re-assessing and changing the light sources used, it is often possible to reduce energy use and pollutive effects while simultaneously greatly improving efficiency and visibility. The big bang model assumes that the universe is many billions of years old. While this timescale is sufficient for light to travel from distant galaxies to earth, it does not provide enough time for light to travel from one side of the visible universe to the other. At the time the light was emitted, supposedly 300,000 years after the big bang, space already had a uniform temperature over a range at least ten times larger than the distance that light could have travelled (called the ‘horizon’)11 So, how can these regions look the same, i.e. have the same temperature? How can one side of the visible universe ‘know’ about the other side if there has not been enough time for the information to be exchanged? This is called the ‘horizon problem’.12 Secular astronomers have proposed many possible solutions to it, but no satisfactory one has emerged to date (see Attempts to overcome the big bang’s ‘light-travel–time problem’). Steve Mazor, the Auto Club of Southern California’s chief automotive engineer, says that while some people freak out when they see the Check Engine light, “others just put a piece of black tape over it and keep driving.” Mazor says it’s important to promptly address problems indicated by the light. Ignoring them could lead to larger, more costly problems later. To report an outdoor light or street light problem, just call your local Gibson EMC member service center or our 24-hour dispatch center at 1-731-855-4740. Please be sure to tell us that you are calling about an outdoor light or a street light and provide the light’s location. We will make the needed repairs as quickly as possible. Report a problem with a street light Today I ended up checking everyones tail lights out in the parking lot. It all started when Kristin ask for help in repairing her inoperative brake likes. After fixing those we checked out all the lights on Kaias wagon and then my wife, Linda, drove in in her 1993 300D, so I decided to check those as well. Please use this form to report a lighting issue. I identify a little-noticed issue in the normal formulation of the light travel time problem. In addition, I lay groundwork for the beginning of a new solution to the problem. This solution invokes similarity between creative acts of Day Four and other days of the Creation Week, but especially Day Three. The Day Three account suggests unusually fast growth for plants. In similar fashion, this possible new solution suggests unusually fast propagation of light on Day Four, probably by rapid expansion of space. This is an appeal to a miraculous event rather than a physical process to get distant starlight to the earth. It is not yet clear whether this suggestion could have testable predictions. If this is the correct way to look at the problem, it may be that we are seeing much of the universe in something close to real time. I briefly compare this possible solution to the light travel time to other previously published proposals. The light travel time problem is one of the greatest challenges that recent creationists face today. Simply defined, if the universe is only thousands of years old as the Bible strongly suggests, then how can we see objects that are at light travel time distances far greater than a few thousand years? A popular unit of distance used in astronomy is the light year, the distance that light travels in a year. Multiplying the speed of light by the number of seconds in a year, we find that the light year is a little more than 9 × 1012 km. Obviously, using “normal” units of distance measurements such as meters or kilometers is woefully inadequate in astronomy, hence the definition of this new unit of distance. With the most straightforward approach to the biblical record and the vast distances in astronomy, we ought not to see any objects more than a few thousand light years away. Most of the objects visible to the naked eye are not this far away, so, as the light travel time problem normally is defined, most objects visible to the naked eye do not present a problem to the recent creation model. Like light waves, water waves emerging from two sources interferes in the space surrounding the sources to produce a pattern of nodes and antinodes lying along lines. The diagram at the right represents the interference pattern created by two water waves. The waves were created by two objects bobbing up and down in phase at the same frequency. Point P on the pattern is a distance of 34.0 cm from S1 and 23.8 cm from S2. Determine the wavelength (in cm) of the water waves. Even more significantly, the word עָשָׂה (‘āśâ; “to do,” “to make”) is used specifically of the creation of the astronomical bodies in Genesis 1:16. The meaning of this verb is broader, semantically speaking, than בָּרָא, and may refer to acts of creative ingenuity by agents other than God. That being said, it is indisputably evident that עָשָׂה is commonly used to refer to the act of fashioning something out of already-existing material (for example, the creation of man in Genesis 1:26; cf. 2:7). Granted, such is not always the intended meaning, even with respect to the astronomical bodies (for example, compare Genesis 1:1 with 2 Kings 19:15; Isaiah 37:16; 66:22; Jeremiah 32:17). However, the use of עָשָׂה in the Day Four creation record apart from any contextual clues to suggest that it must bear the sense of creation out of nothing suggests that there is a distinct possibility that the making of the astronomical bodies was instead a matter of fashioning them from material previously created on Day One. Just as the description of the earth in Genesis 1:2 is of something unfinished that God returned over the next several days to shape and prepare, perhaps the matter that would become the astronomical bodies was created on Day One but was shaped on Day Four, whereupon God brought forth their light to the earth. power up premium Tonus Fortis Celuraid Muscle Eron Plus Testogen TestX Core sterydy Eron Plus BeMass erogan