![]() There are two main ways to fend off dew from forming during the night: dew shields and dew heaters. Dew usually forms on refractive elements like lenses and corrector plates, so for refractors and Schmidt-Cassegrains, having dew prevention tools is essential. This can be essential for astrophotographers where temperature changes throughout the night can alter focus slightly. Last but not least, focusing masks or Bahtinov masks are a simple device that you place over the front of your telescope and they will allow you to precisely dial in perfect focus every time.įor many astronomers and astrophotographers, dew can be one of the biggest enemies. In addition, they can focus automatically by finding the focus point where stars are the smallest, and adjust this over time. Separate from focusers themselves, automatic focusers or autofocusers are an accessory that attaches to your existing focuser and enables you to adjust focus via computer software, so you don't have to touch the telescope. By upgrading your focuser, you can ensure that these issues become a thing of the past. You may also find that some stock focusers lack the ability to dial in focus as accurately as you need it to, especially for astrophotography. Swapping out your telescope's focuser is a very common upgrade for many amateur astronomers and astrophotographers. Many stock focusers suffer from slip, when the focuser cannot support the weight of your camera and accessories. Barlows and focal extenders are usually able to be used with almost any telescope. If you're planning on using one of these correctors for imaging, just know that some of these are designed for specific telescopes, so be sure to check for that first. Some types of correctors include reducer/flatteners, which are most common for refractors, coma correctors for Newtonians, and field flatteners for refractors, Ritchey-Chretiéns, and other types of telescopes. To help you get that, you may need to use an optical corrector. With focal reducers, you can widen your field-of-view to fit that entire galaxy you were hoping to observe.įor astrophotographers, having round stars across your entire image is desirable. With Barlows and focal extenders, you can double your focal length or even more to get the best planetary views and images. Many beginners don't realize that if your view through the eyepiece or camera is too wide or narrow that you can usually do something to change that.
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![]() Elements with similar chemical properties generally fall into the same group in the periodic table, although in the f-block, and to some respect in the d-block, the elements in the same period tend to have similar properties, as well. oxygen, sulfur, and selenium are in the same column because they all have four electrons in the outermost p-subshell). Columns ( groups) are determined by the electron configuration of the atom elements with the same number of electrons in a particular subshell fall into the same columns (e.g. ![]() A new row ( period) is started when a new electron shell has its first electron. In the standard periodic table, the elements are listed in order of increasing atomic number Z. When atomic mass is shown, it is usually the weighted average of naturally occurring isotopes but if there are none, the mass of the most stable isotope usually appears, often in parentheses. Isotopes are never separated in the periodic table they are always grouped together under a single element. For example, carbon has three naturally occurring isotopes: all of its atoms have six protons and most have six neutrons as well, but about one per cent have seven neutrons, and a very small fraction have eight neutrons. Most elements have multiple isotopes, variants with the same number of protons but different numbers of neutrons. Many alternative representations of the periodic law exist, and there is some discussion as to whether there is an optimal form of the periodic table.Įach chemical element has a unique atomic number ( Z ) representing the number of protons in its nucleus. Some scientific discussion also continues regarding whether some elements are correctly positioned in today's table. It is not yet known how far the table will go beyond these seven rows and whether the patterns of the known part of the table will continue into this unknown region. Today, while all the first 118 elements are known, thereby completing the first seven rows of the table, chemical characterisation is still needed for the heaviest elements to confirm that their properties match their positions. In nature, only elements up to atomic number 94 exist to go further, it was necessary to synthesise new elements in the laboratory. The periodic table continues to evolve with the progress of science. The periodic table and law are now a central and indispensable part of modern chemistry. Seaborg's discovery that the actinides were in fact f-block rather than d-block elements. A recognisably modern form of the table was reached in 1945 with Glenn T. It was explained early in the 20th century, with the discovery of atomic numbers and associated pioneering work in quantum mechanics both ideas serving to illuminate the internal structure of the atom. ![]() The periodic law was recognized as a fundamental discovery in the late 19th century. As not all elements were then known, there were gaps in his periodic table, and Mendeleev successfully used the periodic law to predict some properties of some of the missing elements. The first periodic table to become generally accepted was that of the Russian chemist Dmitri Mendeleev in 1869 he formulated the periodic law as a dependence of chemical properties on atomic mass. Nonmetallic character increases going from the bottom left of the periodic table to the top right. Metallic character increases going down a group and decreases from left to right across a period. Vertical, horizontal and diagonal trends characterize the periodic table. Elements in the same group tend to show similar chemical characteristics. The table is divided into four roughly rectangular areas called blocks. It is a depiction of the periodic law, which says that when the elements are arranged in order of their atomic numbers an approximate recurrence of their properties is evident. It is an icon of chemistry and is widely used in physics and other sciences. The periodic table, also known as the periodic table of the elements, arranges the chemical elements into rows (" periods") and columns (" groups"). The Braille mode controls in the graphing calculator and scientific calculator are now behind a checkbox.Improved the keyboard accessibility of draggable images in the graphing calculator.The “Projector Mode” toggle in the graphing calculator has been replaced by radio buttons for default and large display sizes.Fixed bugs in the graphing calculator related to piecewise functions and range slice syntax on non-lists.Many cases that previously produced a “Definitions are nested too deeply” error now work. The calculator got a new internal representation for expressions that makes nested function and variable definitions more efficient.Fixed bugs in the graphing calculator related to the redo shortcut for MacOS and zooming in on points.Updated the undo/redo stack size in the graphing calculator from 20 to 100.Added a unique( ) function to the graphing calculator that takes a list and returns a new list without duplicates.Fixed bugs in the graphing calculator related to opacity of labels on lists of points, voice over accessibility for regressions, and pasting data into tables.Fixed bugs in the graphing calculator related to the stacking order for moveable points, expressions nested too deeply, opacity of labels, and the round( ) function.Removed the panning effect for audio trace of graphs in the form \(x=f\left(y\right)\).Improved the keyboard accessibility of static labels in the graphing calculator.The way that math is read when using a screen reader has been updated to speak shorter forms of common numeric fractions and exponents.Actions provide a way to react to events in the calculator, like clicks or clock ticks, by updating variables in the expression list. Added Actions to the graphing calculator.You can now create new lists based on existing lists using a variety of operations. Added list comprehensions to the graphing calculator.Polygons can now be assigned to variables, used as part of function definitions, and stored in lists.You'll find the 'with' substitution function under 'advanced features' in the function keypad. ![]() You can now use our substitution feature to replace any variable in an expression with a constant value, another variable expression, or a list.Change the values in the list \(L\) and watch how the table changes. The first column in a table can now be externally defined.Learn more about setting an axis to a logarithmic scale. Open the settings menu and navigate to ‘more options’ to get started. Visualize data across many orders of magnitude by setting either axis, or both, to a logarithmic scale. ![]()
![]() Edema is caused by excess fluid collection in the extravascular regions. Check the ankles, sacrum, and tibia for any signs of pitting. Evaluate the patient for the presence of edema. ![]() This must be noted since dehydration reduces sodium levels, which in return promotes fluid retention. Fluid shifting may result in dehydration, even if the total amount of fluid consumed is sufficient. Closely monitor the patient’s fluid intake and output. Reviewing the patient’s medical history may reveal increased fluid or sodium intake. Health care providers can utilize this information to aid them through the decision-making process or to actively manage their patients. Nursing Interventions for Edema Rationale Analyze the patient’s medical history to determine what might be causing the fluid imbalance. Nursing Diagnosis: Fluid Volume Excess related to excessive fluid buildup in the extracellular fluid space, secondary to edema as evidenced by increased diastolic pressure in the pulmonary artery, oliguria, changes in specific gravity, blood pressure, electrolytes, and respiratory pattern. Edema Nursing Diagnosis Nursing Care Plan for Edema 1 Raise the legs while sitting or lying down.Do not sit or stand for long periods without getting up and moving around. If the legs are swollen, consider wearing support stockings.The following actions can be done to prevent the formation of edema: Doctors may counsel their patients to get regular exercise and cut back on the salt intake to prevent edema. Swelling caused by health issues, such as congestive heart failure (CHF), renal disease, or liver disease, cannot be treated but can only be adequately managed. Emphysema and chronic bronchitis are two examples of lung disorders that can induce swelling, and patients with these conditions are strongly advised to quit smoking. However, if certain medications induce edema, the physician may have to adjust the dosage and may necessitate finding an alternate medication that does not cause swelling. Prolonged treatment typically focuses on removing or decreasing swelling. Urine-increasing medications ( diuretics) may be prescribed to treat more severe edema. Proper repositioning, such as elevating the legs with mild edema, may resolve it. Usually, edema may be diagnosed based on this information alone. ![]()
![]() In the following sections, we will delve deeper into the process of setting up the Google Authenticator app, generating verification codes, and provide troubleshooting tips for common issues that may arise. You can usually find instructions on how to transfer your accounts in the account settings or support documentation of the specific website or service. Fortunately, most websites and services provide options to help you do this. In case you lose or replace your device, you will need to transfer your accounts from the old device to the new one. ![]() This can be particularly useful when traveling or in areas with limited connectivity. It’s important to note that the Google Authenticator app works offline, meaning it doesn’t require an internet connection to generate verification codes. These codes can be used in combination with your regular password to log in to the respective accounts or services. Once you have set up the app and added your accounts, you can open the app and view the verification codes for each account. Generating verification codes from the Google Authenticator app is a simple process. This code changes every few seconds, ensuring that only the person with access to the app can generate the correct code. The Google Authenticator app will then generate a unique verification code for that particular account. To enable two-factor authentication, you will usually have to scan a barcode or manually enter a secret key provided by the website or service. This can usually be done through the account settings or security options on the respective websites. Once installed, you will need to enable two-factor authentication for the websites or services you want to use with the Google Authenticator app. Firstly, you need to download and install the app from the official app store for your device. ![]() Setting up the Google Authenticator app is a straightforward process. These passwords, commonly referred to as verification codes, are used in conjunction with your regular password to verify your identity when logging in to various websites and online services. It is designed to provide an additional layer of security for your online accounts by generating time-based one-time passwords (TOTP). The Google Authenticator app is a free mobile application available for both Android and iOS devices. Please visit to view an interactive map of Cambridge that uses modeling based on climate change assessments.FEMA uses the most accurate flood hazard information available and applies rigorous standards in developing Flood Insurance Rate Maps (FIRMs). Just because your property isn't officially location in a SFHA on these maps, does not mean it isn't subject to flooding. ![]() An active river gauge can help determine the extent of flooding when an extreme event is occurring. Following are links to the gauges that monitor the Charles River and the Alewife Brook in Cambridge. To learn more about National Flood Insurance Reform, please visit: or visit to learn about the state's Flood Hazard Management Program.Ĭurrent River Elevations: a river gauge monitors water surface elevation of a river, brook, or other source of water. Residents are encouraged to visit to learn more about the risks of flooding, why flood insurance is needed, how to buy a policy and more. If you have difficulty locating your property please call 61 and we will be able to help locate your property. To determine if your property is located within the SFHA (100-year floodplain) please go to the City of Cambridge Interactive Floodplain Map and click on your property. ![]() Residents are encouraged to contact their insurance agent or visit FloodSmart.Gov to learn more about how and where to get a policy. Lower cost flood insurance from the National Flood Insurance Program (NFIP) is available in low- to moderate-risk areas and you may also qualify for the even lower cost Preferred Risk Policy (PRP). While flood insurance in these areas is optional, maintaining coverage is recommended by FEMA as the flood risk has only been reduced, not removed. The Zone X area is the area that will be inundated by the flood event having a 0.2% chance of being equaled or exceeded in any given year. Most homeowners’ insurance policies do not provide coverage for damage due to flooding.Īreas outside of the SFHA shown on the FIRM as “X” are not required to purchase flood insurance. ![]() If you do not have a mortgage, FEMA still recommends that you purchase flood insurance, but you are not obliged to do so. The SFHA is the area that will be inundated by the flood event having a 1% chance of being equaled or exceeded in any given year, and shown on the FIRM as “AE”. These maps indicate whether properties are in areas of high, moderate or low flood risk. Property owners who have a federally backed mortgage, or plan to refinance with a federally backed lender, are required to purchase flood insurance if their home is shown in a high-risk flood area known as a Special Flood Hazard Area (SFHA) on the DFIRMs. These maps were most recently updated in June of 2010. Fri: 8:30AM - 12PM Floodplain InformationįEMA FLOOD INSURANCE RATE MAPS EFFECTIVE June 4, 2010Īs part of the Federal Emergency Management Agency’s (FEMA) nationwide Map Modernization Program, the City of Cambridge is required to make Digital Flood Insurance Rate Maps (DFIRMs) available to property owners as a resource in determining if they are required to carry flood insurance on their property. ![]() ![]() ![]() Need and install it on absolutely any device, be it a smartphone, phone, tablet, computer or laptop.Īlso, the desktop background can be installed on any operation system: MacOX, Linux, Windows, Android, This collection presents the theme of Star Wars Landscape. 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It needs to be connected to an independent clause because it cannot stand on its own as a complete sentence.įor example, consider the sentence fragment, “When the clock struck nine.” Some sentence fragments are dependent clauses.Ī dependent clause is a group of words that contains a subject and verb, but doesn’t tell a whole story. We don’t know who’s running away from home. This sentence fragment contains a verb (“ran”), but it lacks a subject. Some sentence fragments are missing a subject.įor example, consider the sentence fragment, “Ran away from home.”Ī grammar guru, style editor, and writing mentor in one package. We don’t know what the girl is doing, so this sentence requires additional information to make sense. This sentence fragment contains a subject (“a girl”), but it lacks a verb. Some sentence fragments are missing a verb.įor example, consider the sentence fragment, “A girl with a yellow backpack.” Let’s look at each of these three possible issues in more detail. To fix a sentence fragment, you need to identify which element is causing the issue. There are three things that can cause a sentence fragment-a missing subject, a missing verb, or an incomplete thought. For example, “Ate a cheeseburger.” and “The hungry dog.” are both sentence fragments. When one element of an independent clause (the subject, verb, or complete thought) is missing, you have a sentence fragment. It has a subject (“the hungry dog”), a verb (“ate”), and it expresses a complete thought. This is a complete sentence, also known as an independent clause, because it fulfills all three sentence requirements. Complete thought: the sentence makes sense without any extra information.įor example, consider the sentence, “The hungry dog ate a cheeseburger.”.It tells us what the subject is being or doing. Verb: the verb is the action or state of being performed by the subject of the sentence.Essentially, the subject tells us who or what is performing the verb in the sentence. Subject: the subject is the noun or pronoun that is doing something in a sentence.Read on to learn more about sentence fragments and find out how to fix them.Ī sentence fragment is another term for an incomplete sentence.Ī sentence is a group of words that includes a subject, a verb, and expresses a complete thought. ![]() Sentence fragments are one of the most common grammar mistakes you should look out for in your writing.Ī sentence fragment is an incomplete sentence that is missing an important element. ![]() Perfect as emergency lighting.Ģ.It lights up automatically when sensing motion around 3-8m and stay bright for 35s.ġ.Please turn on the light before first use.Ģ.When the light sensing motion around, it will light up for 30 secondsģ.To turn the light ON/OFF, please press the ON/OFF button on the back. The basic steps involve choosing the ideal placement for the sensor, before wiring it into the. The DEWENWILS Motion Sensor Outdoor Wall Lights are a practical and stylish addition to your outdoor living space. Any questions, just contact us.ġ.The outdoor light is battery powered, no worry for power down. Yes, you can add motion sensors to existing outdoor lights. Note: different brands of batteries will cause product usage time is different. Only using the screw to fix the wireless outdoor solar light on the wall. 【1 Minutes Easy Installation】Only 3 Steps Installation and no special maintenance needed afterwards. The rainproof design make this outdoor spotlight useful in many places like steps, porch, garage, backyard, patio, pathway, garden, yard, garage, stairs. HOFTRONIC PIR motion sensor 360° range 8 meter Maximum 600 Watt IP20 recessed color black. You can move the LED lights up, down, or from side to side, adjust it to provide lighting to 360°, wherever you need light. 4K subscribers Costco has the Capstone LED Indoor outdoor Motion. 【Wide Use For Different Places】Adjustable and Flexible design. adapter is straightforward in that it accepts 100-240 Volts AC and turns it. You can make your outdoor light motion sensor by using an outdoor motion sensor light socket adapter or an outdoor light motion sensor adapter. ![]() It can work perfectly even without sunlight. ![]() 【All Weather Ready】The motion sensor security light is waterproof and heat-resistance, ready for all season and all temperature. 2000-Watt Stem Mount Outdoor Light Control with Photocell, Gray - Motion & Light Sensor Adapter. When detecting motion within 8m at night, the outdoor flood light will light up automatically. 【PIR Motion Sensor, No Dim Mode】This motion sensor light is designed with no dim mode, increasing product life span and working time remarkably. 【Long Working & Super Bright】the motion sensor light equipped with high efficiency COB beads, provides brighter lighting effect and longer lighting duration. Some games that have appeared in Microsoft Entertainment Pack and Microsoft Plus! have been included in subsequent versions of Windows as well. Video games have been included in versions of the Microsoft Windows line of operating systems, starting from Windows 1.0x, all published by Microsoft. Usually commercial software or games are produced for sale or to serve a commercial purpose.Solitaire has been included in every version of Windows since Windows 3.0, except Windows 8 and 8.1. Even though, most trial software products are only time-limited some also have feature limitations. After that trial period (usually 15 to 90 days) the user can decide whether to buy the software or not. Trial software allows the user to evaluate the software for a limited amount of time. Demos are usually not time-limited (like Trial software) but the functionality is limited. In some cases, all the functionality is disabled until the license is purchased. Demoĭemo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program's interfaces. In some cases, ads may be show to the users. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free. There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use). The app features unobtrusive built-in ads that cannot be removed.įreeware programs can be downloaded used free of charge and without any time limitations. The app is only 22 MB in size, it has built-in support for four international languages (English, Spanish, Russian and Ukrainian).Ĭlassic Solitaire is 100% FREE and can be enjoyed on all Windows 10 or Windows 11 devices without limitations. Users simply have to go to the game’s official page and click on the “Get” button. The installation procedure of this app on any Windows 11/Windows 10 desktop, laptop, or tablet PC is handled automatically by the Microsoft Store. There are no additional settings beyond the option to draw single or three cards from the main deck. The only other tools that are available are the undo and restart buttons on the bottom left, and the simple move and time counter on the bottom right corners of the screen. ![]() The playing field is presented as the green table surface on which cards are neatly organized, and all the players have to do is drag and drop cards into available positions. The user interface of Classic Solitaire is as simple as it gets. This simple and easy-to-understand formula has made solitaire one of the most popular tabletop card games in the world for solo players who want to challenge themselves without the need for an opponent. Slowly by surely, users can eliminate cards one by one, re-organize stacks of cards to unveil hidden cards, and by the end eliminate the entire deck. Since it is based on the most basic version of this card game, Classic Solitaire presents the players with the 28 cards randomly dealt into 7 columns, presenting a nice challenge of sorting all the cards on the 4 piles of cards separated by suits. Instead, users can simply leave the job of managing the card deck and neatly organizing of play area surface to this lightweight, fast and stable application that is always fully observing the ruleset of “Klondike Solitaire”, the basic and the most popular version of the Solitaire game in the world. Fully optimized for touch interactions on tablets and laptops that feature touchscreens, this can fully emulate this fun, challenging, and addictive game without the need to manually handle physical cards on your table. ![]() Classic Solitaire is a free version of the popular tabletop card game that can now be enjoyed by all PC users running Windows 10 and Windows 11. |
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