![]() Sometimes, instead of gray or clear crystal, you'll end up with vivid yellows that look a lot like citrine. And if you expose amethyst to heat, you'll see the color fade as well. If you leave your amethyst in sunlight or under other UV sources for too long, its color will fade. We've seen what gamma radiation does to it, but plain old UV light will also have an effect. That little bit of iron does some pretty wild things to the color depending on what sort of radiation it's exposed to, and in what amounts. The base of the amethyst crystal given to me by my dear friends Ziggy and Dali shows the shading from clear to purple caused by variations in iron content. There still won't be a lot of iron, though - maybe about ten to a hundred parts per million. If you have the right equipment, you could see that the colorless or pale bits of the crystal don't have much iron in, while the iron content increases as you get to the darker portions. We're pretty sure that's due to the iron mix in the water changing as the crystal slowly grows. If you look closely at amethyst crystals, you'll probably see that the tips are generally darker than the bases. Chances are they got drunk regardless, but at least they did so in style. So, they named it amethystos, the Koine Greek word for "not intoxicated." People would wear jewelry made from it, or drink from glasses carved from it. Ancient Greeks thought it looked rather like wine, and from there flights of fancy took off and led them and the Romans to think that maybe the gem could be used to ward off drunkenness. That lovely purple, shading from the palest lilac to good deep violet and royal hues, is what gives amethyst its common name. Studies have shown that the levels of radiation within these rocks is generally not enough to cause humans any health concerns, but it's quite enough to cause the Fe³+ atoms to lose an electron and create that dazzling purple. Igneous rocks like basalt have trace amounts of radioactive minerals like radium 226, thorium 232, potassium 40, and uranium 238. Just the natural bits will do, which is why amethyst is so much more abundant in igneous than sedimentary rocks. ![]() But don't worry – it doesn't take Hulk-sized doses of gamma rays to form our gorgeous purple gems. It might have just as much iron as amethyst does, but without some nice radiation, it won't show off its amethystine potential. See, you can have clear quartz that has iron substituting for some of the silica in its crystal lattice. Instead of the big green guy, they could've gone with purple and it would've been science. Same radiation that creates your basic Incredible Hulks. You need just these basic ingredients for amethyst to form: pockets or cavities suitable for deposition, silica-enriched water around 50-250☌, a skosh of ferric iron (Fe³+), and gamma radiation. It's found most places where quartz ends up: in both extrusive and intrusive igneous rocks, in metamorphosed rocks (especially in alpine-type fissures), hydrothermal veins, rocks deposited by hot springs, and even some sedimentary rocks. Good news for those who want a bit of their birthstone for their own selves, isn't it?Įven without those sources, amethyst is fairly easy to track down, even if gem-quality specimens are less abundant. Once those mines started producing, amethyst became available in copious quantities, and now you can buy some really nice specimens for the price of a gourmet coffee or few. It remained an expensive stone, reserved only for the fortunate, right up until ginormous deposits were found in South America in the 1800s. ![]() It even ended up in many a country's crown jewels. Rhea the Titan gave it to Dionysus, god of wine, to preserve his sanity from the vine. ![]() So, it may shock you just a little bit to learn that gem-quality amethyst used to be considered just as valuable as rubies, celebrated in myth and legend. ![]() So, everyone knows amethyst is a purple variety of quartz, yeah? And we're used to it being abundant and fairly inexpensive, aside from those jaw-dropping giant geodes and some really fabulous art. Believe me when I say we'll get there soon, though! So in today's post, we're actually not going to talk much about geodes at all. However, along the way, I got diverted by some very interesting facets of amethysts, including some pretty neato human history. So I decided to go big and explore the origins of those enormous amethyst geodes suitable for making into bathtubs. I must start our foray into this month's birthstone with a confession: I didn't think amethyst would be exciting. "The stone is an amethyst but I, the tipler Dionysus, say, 'Let it either persuade me to be sober, or let it learn to get drunk.'" ![]()
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![]() Under the direction of plastic surgeon Michael Schwartz, MD, Skin Deep Laser Medspa is an excellent resource for anti-aging and rejuvenation in the greater Pasadena area. ![]() Patients have access to the latest treatments performed by highly skilled practitioners, all in a setting that invites you to relax and enjoy this sliver of time you’ve carved out for yourself. The Lumenis LightSheer can reach hair of any diameter and depth even on darker skin tones.īella Medspa employs Lumenis LightSheer diode laser hair removal at all locations.īella Medspa offers laser hair removal for all skin types at all 6 of our locations: Philadelphia, Newtown, PA, Chester Springs, Reading, PA, Lancaster, PA and Camp Hill.Skin Deep Laser Medspa is a full-service medical aesthetics practice serving men and women from in and around Pasadena, California. The Lumenis LightSheer diode laser has greater target resolution at deeper levels of skin, allowing it to remove hair at the follicle without harming skin pigment.ĬhillTip technology keeps the removal process cool and comfortable throughout the procedure. Skin pigmentation occurs only throughout a relatively narrow layer of skin. People with black skin never develop a sunburn and almost always have naturally dark hair and eyes. Black skin varies from deep mahogany hues to an intense brown-black.People with brown skin generally have dark hair and almost never burn. Brown skin, like medium skin, encompasses a broad range of hues ranging from a light cafe au Lite to deeper milk chocolate tones.Most people with light or dark olive skin have dark hair. Olive-skinned people typically tan well and rarely burn. ![]() It refers to a deeper skin tone with hints of gold that turn the bluish undertones of fairer skin types to a slight green cast that resembles the hue of an olive. Olive skin is also sometimes called Mediterranean skin.Hair colors range from sandy blond to black. Those with medium skin tan well and typically burn only when spending hours in the sun without sunscreen. Medium skin covers a relatively large range of skin tones from bisque to light bronze.Fair-skinned people still burn easily and must take precautions during a day at the beach. Fair skin typically has a more uniform pigmentation than light skin, freckling only after exposure to sunlight.Visible freckles, light blond or red hair and a propensity to sunburn quickly are hallmarks of light skin. Light skin is so fair that delicate veins are often visible under the skin's surface. ![]() ![]() The Six Skin Types For Laser Hair Removal While the first laser hair removal treatments required a greater contrast between hair follicles and the surrounding skin, more finely calibrated equipment such as the Lumenis LightSheer diode laser make hair removal available for all skin types. Laser hair removal operates on the principle that certain colors absorb light differentially, allowing a pulsed laser to deliver heat to a specific area without disturbing nearby skin. Using focused light to slow and stop unwanted hair growth sounds like science fiction, but for the smooth-skinned clients at Bella Medspa, it's a fact. ![]() ![]() ![]() One consequence of this scaling is that the amount of power in each mode can be different. ![]() The reason is because when the mode expansion monitor is calculating the modal fields of the structure, the mode amplitude is arbitrary and the fields are simply scaled such that the peak |E|^2 value is 1 with a phase of 0. Grating Coupler), or if you are expanding the fields using a different mode than what was injected by the source, the interpretation is less obvious. However, if you have multiple waveguide cross section geometries in the simulation (ex. What is mode expansion?Ĭonsider a waveguide/fiber that supports a set of forward-propagating modes, \( \varphi_ = 0 \), since there are no reflections in this setup. Note that if performing parameter extraction using FDTD, using ports and the S-parameter sweep tool is preferable since the port objects can act as both sources and monitors and return S-parameters as a result. ![]() See the Mode expansion monitor page for an overview of these objects and lists all input and output properties. This page provides additional information to allow users to get the most accurate results from their simulations. Screenshots Super Vectorizer Pro Merkmale und Beschreibung Hauptmerkmale: Neueste Version: 2.2. Mode expansion monitor simulation objects allow you to analyze the fraction of power transmitted into any mode(s) of a non-absorbing waveguide or fiber. Super Vectorizer 2 is a professional vector tracing software that automatically converts bitmap images like JPEG, GIF and PNG to clean, scalable vector graphic of Ai, SVG, DXF and PDF. ![]() ![]() An option for this are XSLT transformations (see an example in Simple XML to LaTeX Transformation Tutorial or my XSLT video tutorials in German) but that’s not immediately relevant for you at this point. If you want to represent said data, the XML family (don’t worry too much about it now) provides methods for transforming this data to, say a website (in HTML) or a printable format (in LaTeX). XML is used to semantically describe data (for long-term archiving and as a “single source”). Like its well known sibling HTML (the Hypertext Markup Language), XML is historically related to SGML ( Standard Generalized Markup Language) which had introduced the principle of the separation of form and content. The “eXtensible” stands for “invent your own elements”. These are possible because XML really is a meta-language for formulating data standards. In the DH, it is especially popular in the context of data standards such as the Text Encoding Initiative (TEI) or others, such as XML-based RDF ( Resource Description Framework), LIDO ( Lightweight Information Describing Objects) and many others. It further combines machine processability and human readability as a data format. Its benefits are that it’s very simple – given it’s simple text file based nature – and not very data-intensive, thus ideal for long-term archiving. The eXtensible Markup Language is a text-based data storage format. However, I think they are really enough to understand XML (although I’m open to feedback if you find that this isn’t the case). But because I’m not physically in the same room with you to answer all the questions which come up, I needed to write a few paragraphs after all. That’s why I wanted to provide a super short blog post (ended up being longer than I meant it to be). While this may certainly be considered a crash course, in my experience it actually works. On the flip side, my boss tends to introduce XML in just one slide. Some of the supposedly “gentle” introductions to XML (see resources list below) really are quite long and overwhelming. I feel that annotation is a concept most Humanities scholars are familiar with – even when they don’t realize that yet. XML really is quite easy to understand, especially to Humanities people. Because despite everything there is to be said about XML in the Digital Humanities, it’s really quite simple and everybody can learn it. ![]() But then I realized: You don’t need a perfect intro, you need a simplistic intro, so you don’t get lost in the clutter. ![]() Given that I teach XML regularly, there are so many great tutorials out there already and it’s such a fundamental skill in the DH, I panicked. ![]() So far, this hasn’t happened yet because I kind of froze up due to perfectionism. As some of you might know, I have been promising to provide an intro to XML for a long time. ![]() ![]() ![]() Up to 75,000 early childhood educators will be able to access paid professional development as a direct result of the investment. The Budget will also include $72.4 million over five years to boost skills and education within the sector. ![]() Subsidy rates will increase up to 90 per cent for families, and 95 per cent for any additional children aged under five who are also in care.ĭr Chalmers said: 'It will make it easier for parents and carers, particularly women, to participate in the workforce.'Ĭhildcare funding will increase by $1.4 billion this budget, taking total government spending for the next four years to $55.31 billion. Upwards of 1.2 million families will be better off from July this year as the government commits to cutting the cost of childcare. People over 55 will now be able to receive a similarly high payment, in a new change. Those with a dependent child or who are over 60 currently receive $745.20 a fortnight, or $53.22 a day. The increase will kick in from September 2023.Īt present payments for a single adult with no dependent children are $693.10 per fortnight, or $49.50 a day, and slightly less for those in a live-in relationship. The government has increased the Jobseeker payment – aka the dole - by $2.85 a day, or $40 per fortnight.Ĭentrelink payments including Youth Allowance, Parenting Payment (partnered), Austudy, ABSTUDY, the Disability Support Pension (Youth) and the special benefit will increase by the same amount. This means households with one child earning over $108,892 will not be eligible, nor would families with two children and a combined income of $117,000. ![]() The government has confirmed the money will only be available to those who are eligible for the family tax benefit. However, thousands of families will miss out on the handout. It will also depend on what state or territory a household or business is in because it will vary by 'how much the states and territories are prepared to kick in, because this is a co-investment with them,' Dr Chalmers said. More than five-and-a-half million households will be able to claim up to $500 in a cost of living rebate – depending upon where they live, how high prices are, and whether a home is on a pension or a fixed income. The government has also announced a $14billion cost of living package that will give some households as much as $500 off their energy bills and has also indicated it won't change the government's scheduled Stage Three tax cuts at this time Here, Daily Mail Australia provides a comprehensive guide to all you need to know about the 2023 Federal Budget. 'The pressures on the Budget are acute – but as a Labor Government we will always strive to help those who need it the most.'ĭr Chalmers earlier described the Budget as one in 'Labor's best traditions' – focusing on 'the vulnerable… investing in the future of our country and its people'. 'This Budget is carefully calibrated to alleviate inflationary pressures, not add to them,' Dr Chalmers said. In a speech announcing his Budget on Tuesday evening, Dr Chalmers said he was desperately trying not to add to inflationary pressures – with the consumer price index at seven per cent. ![]() Meanwhile, smokers will be stung with higher prices, the Stage Three tax cuts due to come into force in the middle of next year are going no-where – mostly benefiting Australians who earn more than $200,000 – and voluntary contributions to super will be taxed at 30 per cent after balances hit $3million. Dr Chalmers said on Tuesday night that his Budget would 'help those who need it most'īut tucked inside the plan were some nasty shocks for taxpayers including confirmation he will scrap the lower and middle income tax (LMITO, or 'Lamington' offset) – which will cost some 10 million Australians up to $1,500 at tax time despite the rising cost of living. ![]() ![]() ![]() ![]() After he chose Katrina, she sent him a letter explaining her decision to return to England. After the Lady attacks Abbie in a library and nearly kills her, Ichabod realizes that she is actually Mary Wells, who was once betrothed to him. Ichabod identifies the culprit as "The Weeping Lady", the ghost of a woman who accidentally drowned centuries earlier. Meanwhile, Ichabod and Abbie investigate the death of a woman who appears to have drowned in her house. Katrina draws the Horseman's suspicions when she reaches out to Ichabod with a letter carried by a bird. Nick unknowingly sells the broken flute to Henry, who grinds it into dust for a ritual. Ichabod and Abbie team up to destroy the piper and save Sarah. Sarah is returned to her parents, but her mother subsequently tries to sacrifice her to the piper in order to break her family's curse. Irving tries to nullify his contract with Henry, but learns that the latter now controls his soul. He then demands the flute, but Abbie breaks it instead. After tracking her down, Ichabod and Abbie unchain her while Nick distracts the piper and sets charges to slow him down. They convince Nick to help them search for the girl in exchange for the flute. When 10-year old Sarah Lancaster is abducted by a demonic pied piper, Ichabod and Abbie discover a bone flute in the woods while searching for the girl, which puts Abbie into a trance when Ichabod plays it. Enraged, Henry returns to his childhood home and burns the bed where he was born. Abbie and Ichabod, with the help of Jenny's old friend Nick Hawley, are able to talk her out of it, and seal the coin in a piece of sanctified glass. ![]() After several murders, the coin is taken into police custody, where Henry swipes it and gives it to Jenny, driving her to seek the death of the new sheriff out of revenge for her mother (who died in the same asylum where Jenny was imprisoned). Ichabod and Abbie learn that Henry has brought a cursed coin that corrupts its owner (which is what caused Benedict Arnold to turn against Washington) to Sleepy Hollow. Jenny is freed after Abbie gets the sheriff to reduce her sentence to community service, and the two sisters argue about trust and their complicated past. While visiting Irving, Ichabod and Abbie learn that Henry, in his capacity as Irving's lawyer, has banned them from seeing him. While signing the contract, Irving cuts his finger and signs it in blood. Posing as a lawyer, Henry visits Irving and offers his services. Jenny, having been arrested for possession of illegal weapons, remains in custody while Abbie works to persuade the new sheriff to release her. The Kindred, meanwhile, mysteriously disappears after the battle and cannot be found. Using the head, Ichabod revives the Kindred and sends it to distract Henry and the Horseman while he meets with Katrina, who convinces him to let her stay so she can spy on them. She also arranges for him to be transferred to the psych ward so that he can assist them more easily. Abbie visits Irving in jail, learning that the head is kept in a secure safe deposit box. Eager to rescue his wife, Ichabod persuades Abbie to help him acquire the Horseman's head. Ichabod and Abbie learn of the "Kindred", a Frankenstein-esque monster created by Benjamin Franklin using the remains of fallen soldiers, which he eventually abandoned after failing to acquire the means necessary to give it life. Moloch contacts Henry and provides him with a weapon: an enchanted suit of armor wielding a flaming sword that only he can control. Escaping purgatory, they prevent Moloch from following them by allowing the key to naturally disintegrate. Entering Moloch's realm, Ichabod encounters a doppelgänger of himself, whom Abbie beheads. They decode a hidden message in the sketchbook, which contains the location of a key that can bridge purgatory and the real world. Ichabod escapes from his coffin using improvised explosives, and helps Jenny escape from Henry's thugs. Abbie encounters Andy's condemned soul, which guides her to a magic mirror that she uses to warn Ichabod of Henry's plans. Meanwhile, Henry tracks down Jenny and uses his powers to consume her sins, obtaining a lead to a portion of Benjamin Franklin's ( Timothy Busfield) sketchbook. Braden Fitzgerald as Young Jeremy Craneīetrayed by his son, Ichabod vows to rescue Abbie, who remains trapped in purgatory. ![]() Cynthia Stevenson as Nurse Gina Lambert.Patrick Gorman as Reverend Alfred Knapp. ![]() ![]() ![]() What is 2D ultrasound?Ī 2D ultrasound is a black and white image of your fetus, created using ultrasonic sound waves which are sent back to the transducer. The best time for this scan is at the 26-33 week mark. When should a 3D/4D ultrasound be performed? In some cases perspectives that are not achievable through 2D ultrasound can be achieved. The main point of 3D/4D ultrasound imaging is to give the parents a more realistic image of their child.ģD/4D imaging can also be used in gynaecological scans to give your specialist a greater view of the uterus and ovaries. 2D imaging is also used during nuchal translucency testing and other routine examinations. When is 2D ultrasound recommended instead of 3D/4D ultrasound?ĢD ultrasound is still used for the preliminary examination of your pelvis and fetus. Some parents believe that this makes the experience seem more ‘real’ or they are simply able to connect with the appearance of their baby. Most parents now prefer 3D/4D ultrasound as it enables them to have a better look at their baby. 4D scanning is 3D scanning in real-time and gives an indication of changes with time. During routine scanning, 3D images are used as an adjunct to regular 2D images. When pregnant with multiples, gender can still be determined early on usually right up until delivery but if facial imaging is a priority, we recommend coming no later than 26 weeks as it usually gets tighter earlier on in the womb with multiples which can impair 4D clarity.3D baby ultrasound and 4D ultrasound are not only beneficial in diagnosis, but also popular for parents to bond with their baby during pregnancy.ģD ultrasound images of your baby can be clinically useful to diagnose certain fetal anomalies such as cleft lip and limb abnormalities. In part two we can image a fully developed baby exhibiting lots of expressions and well-defined facial features. The benefit of this package is that in part one we can determine/confirm gender early if wanted (it’s optional though) and typically see a more active, younger baby occupying the full screen. Many folks opt to do the Double Take package which is a two-session package done in both the second and third trimester of the pregnancy. ![]() anterior) we recommend coming in for the 4D scan no later than 27-28 weeks as the placenta can obscure facial imaging as the baby gets bigger. On the other hand, if the placenta is above the baby’s face (eg. ![]() Women who have an above average volume of amniotic fluid around the baby enables us to push the 4D scan later, often up to 34/35 weeks or more without compromising image quality. The benefit of coming earlier in the pregnancy rather than later is that we can visualize the whole baby on the screen at one time as opposed to having to view a larger baby in sections.īabies start to appear fuller in the face around 24 weeks so if seeing a chubby baby with well defined facial features is your preference, we typically recommend 27 to 30 weeks as optimal, although we are often able to obtain great images well before and after 30 weeks.Īs babies get larger, 4D image clarity becomes largely dependent on the individual pregnancy. If determining / confirming gender is top of mind, then as early as 14-16 weeks is good for gender assessment right up until delivery. We are often asked, when is the best time to do a 3D/4D Ultrasound? 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![]() ![]() That means it can measure, to within 20 percent accuracy, the distances of stars that lie tens of thousands of light-years away. The parsec is a unit of length equivalent to around 20 trillion (20,000,000,000,000) miles, 31 trillion kilometres, or 206,264 times the distance from the earth to the sun. The European Space Agency’s Gaia mission, currently underway, can measure parallax angles of just a few millionths of an arcsecond. That’s why a parsec has that value, and not any other.Īlthough astronomers often measure distant objects in parsecs or megaparsecs (1 megaparsec is 1 million parsecs), only nearby objects have parallaxes that we can actually measure. ![]() And a parsec is the distance - 3.26 light-years - that a star must lie from the Sun for its parallax angle to be exactly 1″. The two different sightlines, one at each end of Earth’s orbit, create a triangle the parallax angle is defined as half the angle at the triangle’s apex. If you draw a simple diagram, you’ll see that the distance the star appears to move is related to the angle at which it is viewed. Translated to the stars in the sky, two photographs of the same nearby star taken six months apart will show it appearing to move against the background of more distant stars because Earth has moved to the other side of the Sun in its orbit. Your finger will appear to shift because each eye views it from a slightly different angle. Next, open your left eye and close your right. Basically, its a unit of length used to measure the astronomically large distances between objects beyond our Solar System. So, in this sense, 1 pc is always 3.26 ly no matter where you are. It's defined as being the length of the leg of a right-angled triangle, of which one leg equals 1 AU and one angle equals 1 ArcSec. A light year (ly) is the distance that light, traveling through a vacuum. Well, 1 parsec is just a unit for length, like metre or mile, and 1 pc 3.26 ly. Close just your left eye and observe where your finger appears against the background. A parsec (pc) is the distance at which 1 AU would subtend an angle of 1 second of arc. One of the simplest ways to see for yourself how this works is to hold your hand at arm’s length in front of your face and raise one finger. This is because as our planet moves, our viewpoint changes. Over the course of several months, nearby stars appear to move with respect to more distant objects - an effect called parallax. Earth circles the Sun, making one complete orbit per year. Question: Why is a parsec 3.26 light-years and not some other number?Īnswer: A parsec, or “parallax second,” is defined as 3.26 light-years because of how it is measured. ![]() |
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