![]() ![]() But the wildness truly began when Max Planck and Albert Einstein laid the foundations for quantum mechanics in the early twentieth century. It’s hard to overstate how wild this discovery was to physicists in Young’s time. Where a crest meets a trough, you get destructive interference and darkness. Where the crest of one wave overlaps with the crest of the other, you get constructive interference and a patch of light. Interference is possible only if light behaves as a wave that strikes both slits at once and diffracts through each, creating two sets of waves on the other side of the slits that propagate towards the screen. Instead, you see many bands of light and dark, strung out in stripes like a barcode: an interference pattern (see ‘Wave–particle weirdness’). If light were made of streams of particles, as Newton conjectured, you would expect to see two distinct strips of light on the screen, where the particles pile up after travelling through one slit or the other. ![]() “The experiments I am about to relate”, he told the Royal Society of London 1 on 24 November 1803, “may be repeated with great ease, whenever the sun shines.” In a simple, modern form, Young’s ‘double-slit’ experiment involves shining light of a single frequency (say, from a red laser) through two fine, parallel openings in an opaque sheet, onto a screen beyond. But perhaps his most enduring legacy is proving Isaac Newton wrong about light - and igniting a debate about the nature of reality that still persists. ![]() Thomas Young, born 250 years ago this week, was a polymath who made seminal contributions in fields from physics to Egyptology. The double-slit experiment’s interference patterns suggest something is in two places at once. ![]()
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![]() Casement windows do not open or close, operating predominately as a large-and secure-window ideal for emphasize beautiful views of the outside and to maximize natural light. The pattern will also produce smaller squares in the corner-a delicate touch.Ĭasement windows go well with the Prairie window grid style. The grills run along the edge of the glass, and this leaves more of the window unobstructed. The Prairie grid style sports a larger square or rectangle in its center, with its sides close to the edge of the windowpane. It’s a stark contrast to the order and symmetry of a Colonial window grid. Prairie Window Gridįor something completely different, try the Prairie window grid style. Specifically, these grids are referred to as “six-over-six” or “nine-over-nine” grid patterns. The sash adds to this overall balance, creating a visual line in the middle of the home’s double-hung window, and with a Colonial style window grid over top, the window will have about six to nine square or rectangles. The sash of a double-hung window is unavoidable as it provides the window’s opening and closing function, but for a Colonial home, it’s utterly complimentary. Boxy houses greatly benefit from the symmetry of a Colonial style, upping their curb appeal with this tribute to traditional American architecture.Ī Colonial window grid focuses on this symmetry, and if you have a Colonial style house, then there’s no doubt you should double up and use this window grid as a finishing touch. ![]() Typical Colonial style calls for symmetry, a trait that’s appealing to the human eye and works well on houses built in the same fashion. ![]() There’s nothing that says “traditional” more so than a Colonial style. Here, we’ll delve into the different styles that can help you determine if you want grids for your windows and if so, which will best compliment the overall look of your home. Yes, there are more than one style of window grid other than the simple cross you’re probably imagining in your head. Window grids harken a traditional appeal and when you’re window shopping (literally), they present themselves as a design choice for your home. ![]() Nowadays, the window grids have surrendered their once crucial purpose to mere aesthetics-but that’s not a bad thing. Back in the day, these grids that secured the glass panels allowed manufacturers to safely ship windowpanes worldwide without fear that they’d break in transit. Before modern manufacturing, these window grids held together windows that were multi-paned. Window grids, sometimes referred to as grilles or muntins, once served an essential purpose to the construction of the window. But have you ever wondered if those grids in the window actually do anything? When you think of a window, you can picture it-a square with a cross-right? It seems like it’s the go-to visual of a standard window, one that even little kids incorporate in their drawings of a typical house. ![]() ![]() ![]() ![]() mysql> select count(*) as total_count,Ĭount(case when product='A' then 1 else null end) as A_count,Ĭount(case when product='B' and amount>200 then 1 else null end) as B_countīonus Read : How to Use COALESCE in MySQL You can also get above result using CASE statement as shown below. Similarly, we calculate count for rows where product=B and amount > 200. Please note, it is important to use null in case IF condition fails else even non-matching rows are counted. Else it is not counted (assigned as NULL). So MySQL, counts only those rows where product is A. Our condition is to match rows where product = A. Let us look at the above query in detail.Ĭount(*) counts all rows in table to give total count.Ĭount(if(product=’A’,1,null)) as A_count – when we use an IF condition inside count function, it will only count rows where condition is true. mysql> select count(*) as total_count,Ĭount(if(product='A',1,null)) as A_count,Ĭount(if(product='B' and amount>200,1,null)) as B_count Here is the SQL query to accomplish the above. Let us say you want total count, count of product A orders, and count of product B orders with amount > 200 in single query. Mysql> insert into product_sales(id, product, order_date, amount)Īlso read : How to Use CASE statement in MySQL Let us say you have the following table product_sales(id, product, order_date, amount) mysql> create table product_sales( Here are the steps to get multiple counts with different conditions in single MySQL query. Multiple Counts with Different Conditions in single MySQL query In this article, we will look at how to get multiple counts with multiple conditions in MySQL. You can easily get multiple counts with different conditions or criteria in a single query in MySQL, using IF or CASE statements. ![]() ![]() ![]() ![]() ![]() Similar analyses have been done by private-sector firms and university consortiums, and they have become important tools to help assess disaster risk in ways not previously possible.Įnvironmental groups have been critical of FEMA for its outdated flood maps and its slow pace of updating maps in areas with rising risk.Ī FEMA spokesperson said the agency’s flood maps do not conflict with First Street’s findings, but “rather they complement one another by depicting different types of risk and will be helpful in different ways for an individual to determine flood risk.” The report and Flood Factor tool reflect revolutionary advances in the way scientists calculate climate change risk using complex data models, evidence-based climate projections and even simulations that show how climate disasters would affect communities and properties, often using digitally enhanced overlays on base maps. In addition to the report, First Street rolled out a new internet tool called Flood Factor that allows individuals to focus on neighborhoods or specific properties to see detailed flood risk information, including a 1-to-10 Flood Factor score for each mapped property address. He said the information would allow communities to make calculated decisions about flood risk rather than face a “binary choice” about risk based on a map line. “I do think that this will be a bit of a shock to some folks, but an important one that people can then understand and react appropriately versus continuing to operate with blinders on.” “For a lot of people, they’ve just had no information previously, and this is going to be the first time that they’re actually going to see it and be able to understand what flood risk means to them personally,” Matthew Eby, First Street’s executive director, said during a briefing on Monday with reporters. In most of those cases, the cost of flood damages falls on property owners. ![]() Mortgage lenders and insurers also continue to finance and write policies for such properties without adequately accounting for flood risk. The granular analysis, which accounts for sea-level rise, coastal storm surges, peak precipitation events and river flooding, means that homeowners have purchased properties in virtually every state without fully understanding their loss risk, the authors said. The findings, based on advanced modeling of flood conditions under current and projected climate scenarios, show that FEMA’s estimates of properties with a 1% flood risk-meaning a property that’s expected to see major flooding once every 100 years-could be far too conservative. The Federal Emergency Management Agency has undercounted nearly 8 million homes and businesses that face substantial risk of flooding, placing more Americans in jeopardy from coastal storms, rising rivers and flash flooding, according to a new analysis from the nonprofit First Street Foundation. ![]() ![]() ![]() TM use promo SKU 40269 for Business Printing Services such as FPM. Products, services, and hours may vary by location. Offer void where prohibited or restricted by law. Does not apply to packing, shipping, rush, or delivery charges. Discount not valid on the following products and services: finishing-only orders digital, passport or mounted photo self-service print, fax, scan, or shred direct mail, Every Door Direct Mail ® or postage custom frames, custom branded boxes or promotional products. 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