It is strongly recommended to the student of this book that he obtain specimens of rock, not labelled, and study their features with a view to naming them. The Table for Identification of Rocks will help in naming them.
The FBI’s astonishing new identification system is the product of 175 years of innovation — and paranoia.
Here are the best plant identification apps for Android and iOS that allow you to identify flowers and plants anywhere.
Elderberry Syrup Master Recipe Makes about 20 oz Flavorful and sweet, elderberry syrup can be added to smoothies, herbal teas, mixed drinks, and fermented sodas, or diluted into hot water or cold sparkling water. For a visually appealing and tasty treat, drizzle this da
January in the garden can be quite boring. Annuals are gone, and perennials and trees are dormant waiting for warmer weather. Still, I need to go outside and survey the once life-filled areas, even…
This is an extract from my (second) substantive article on the Indo-European ‘Interpretatio’ of Dionysus which we ran last year – this portion focusing upon the empowering elixir …
Gram-positive bacteria retain the crystal violet-iodine complex and stain purple, whereas gram-negative bacteria stain pink.
Two amazing apps for plant identification that actually work instead of 20+ plant id apps that don't work. Tested by an avid gardener!
Garlic Mustard Root = Wild-Style Horseradish
Botanical Name: Urtica dioica, Urtica galeopsifolia. The annual nettle species dwarf nettle (Urtica urens L.) can be used in a similar manner as the stinging nettle in herbal medicine. Other Common Names of Stinging Nettle: Big string nettle, common nettle, Nettle, devil’s leaf, European nettle, Grosse Brennesse (German), grande ortie (French), ortiga (Spanish), brenninetla (Icelandic), brænde nælde (Danish). Habitat: While originally from the cold regions of northern Europe and Asia, this herbaceous shrub can now be found growing all over the world. The plant grows well in nitrogen-rich soil and is most often found in disturbed areas such as lawns,
ROCK IDENTIFICATION KEYS Mineral Identification Links that we used to identify minerals: The Rock Key Table of Contents and Information- Rock Key: A Dichotomous Key- ROCK ID- Follow the arrows and …
Listening to instructions Color pencils are required for the activity. Read the sentence once and complete the instructions. This activity develops: - Auditory processing skills - Working memory - Following instructions - Color identification
Teaches a novel way of identifying plants by observing their plant family patterns and characteristics, which often also give clues to their edible or medicinal usage. With helpful tips to group plants by family, in-depth family profiles & handy nicknames and mnemonics, this book unveils the world of classifications behind the plants we see in our everyday environment. While perfectly suited for a beginner, this book will also simplify botanical identification processes even for seasoned plant enthusiasts. With the methods learned in this book plant identification becomes more immediate & intuitive, and one's plant awareness becomes increasingly interconnected. New editions also have full color illustrations, and simple diagrams to help you clearly identify the features you are looking for. A staple for any Herbalist's Bookshelf.
I recently watched a cross-country running race that used a digital timing system, so I investigated how the RFID timing chip works. Each runner wears a race bib like the one below. The bib has two RFID tags, consisting of a metal foil antenna connected to a tiny RFID (radio-frequency identification) chip. At the finish line, runners pass over a pad that reads the chip and records the finish time. (I'm not sure why there are two RFID tags on each bib; perhaps for reliability of detection.) This race bib has two RFID chips and antennas for timing the race. The RFID chips are tiny black specks in the small loop of each antenna. The die photo below shows the RFID chip used on these tags. To create it, I took 22 photos of the chip with my metallurgical microscope and stitched them together to create a high resolution photo. (Click the image for a larger version.) To prepare the chip, I removed it from the plastic carrier with Goof Off, dissolved the antenna with pool acid (HCl), and burnt off the mounting adhesive over a stove. This process left the chip visible with just a bit of debris that wouldn't come off. I'd probably get better results with boiling sulfuric acid, but that's too hazardous for me. I described the image stitching process in this article. Die photo of the Impinj Monza R6 RFID chip. The chip turns out to be the Monza R6 RFID chip built by Impinj, a leading RFID chip company. The chip datasheet includes a die photo of the chip (below), but it is mostly obscured for some reason. Even so, it is clear that the chip in the datasheet matches the one I photographed. Die photo of the Monza R6 RFID chip from the datasheet. Most of the chip is obscured; the antenna contacts are visible at the top. How RFID timing works The basic idea of RFID timing is the finish line has an RFID reader connected to a directional antenna. When the runner crosses the finish line, the reader communicates with the RFID chip on the runner's tag, determines the runner's ID number, and records the elapsed time. You might expect that the RFID chip simply returns the runner's number as the runner crosses the finish line, but there's a complex two-way protocol at work here. The chip uses the industry-standard EPC standard, and supports about a dozen commands: Select, Query, Read, Write, Lock, and various others. (While some RFID chips include cryptography, the R6 does not.) The chip receives commands from the reader and responds according to the protocol. The chip's memory includes an Electronic Product Code (EPC), which is a 96-bit universal identifier. In this case, the EPC value is returned to identify the runner. One interesting thing is the RFID chip has no power source other than the radio signal; it is passive and doesn't need a battery. The reader transmits a radio signal (between 860 and 960 MHz), which is picked up by the antenna on the tag. The tiny amount of power received by the tag is what powers the RFID chip. To send data to the RFID chip, the reader pulses the radio signal it emits. The chip detects these pulses and converts them into bits, using various modulation schemes (details). You might expect the chip transmits a radio signal to send data back to the reader, but it doesn't have enough power to do that. Instead, the chip dynamically changes load on the antenna (basically a transistor shorts out the antenna) while the reader is sending the radio signal. This causes a tiny change in the signal strength at the reader (about 1 part in 1000), which the reader can detect. This process, called backscatter, allows the chip to send data back to the reader without using power. You might wonder how the system works if two runners cross the finish line at the same time—how do both tags get read without interference? RFID tags are designed for inventory systems, so they are designed to handle environments where there are hundreds of tags in range of the reader. They use an efficient anti-collision protocol. The reader can minimize collisions by querying a subset of tags at a time ("I only want to hear from tags whose ids start with 123.") By rapidly iterating through subsets, a large number of tags can be queried with minimal conflicts. Collisions are handled using a protocol called the Q-algorithm. Essentially, each tag waits a random amount before responding, so hopefully there won't be a collision. If there is a collision, tags wait a longer random amount next time until they can respond without collisions. This is based on the ALOHA protocol, which was also used to handle collisions on Ethernet networks. Inside the chip Below is another die photo. I took this one earlier in the cleaning process, so there is more debris on the chip surface. The colors are slightly different in this photo due to different microscope camera settings. Die photo of the Monza R6 RFID chip. Because the chip is complex and has multiple layers of metal, I was unable to analyze its circuitry in detail. However, I can make some informed speculation about it. The top part of the chip is the analog circuitry, extracting power from the antenna, reading the transmitted signal, and modulating the return signal. The two antenna contacts are the large gold pads at the top (on the left and right). The rectangles between the antenna contacts are probably transistors and capacitors forming a charge pump to extract power from the radio signal (see patent). The voltage received from the radio signal is about 200 millivolts, while the chip's circuitry requires about 1 volt. The charge pump boosts the incoming voltage to the higher voltage required. The middle of the chip has the logic circuitry. Given the complex protocol that the chip handles, you might expect a microprocessor to control the chip. But it uses a complex state machine instead, presumably to keep the chip small and reduce power consumption. This is probably build from CMOS standard digital logic cells, connected by the visible wiring (horizontal lines). This logic includes a pseudo-random number generator to support the anti-collision algorithm. The chip has the label "IMPINJ KELSO". It's unclear why it is labeled "KELSO" and not "R6". I couldn't find any references to a "kelso" chip, so this could be an internal name. The Impinj company is in Seattle, Washington and Kelso is a small city in Washington, so perhaps that's the connection. The bottom third of the chip likely contains the storage. The black rectangles above and below the IMPINJ KELSO text are probably the 12 bytes of non-volatile memory (NVM) that hold the tag identification. (This is essentially flash memory.) This Impinj patent discusses the NVM system. Writing the memory requires about 12 volts, which is provided by another charge pump. The gold squares scattered across the chip are probably test points used to program the chip and verify proper operation during manufacturing. These chips are really small Let me emphasize how tiny the RFID chips are—they are specks, about the size of a grain of salt. According to the datasheet, the chip is 464.1µm x 400µm (about 1/64 inch on a side). This is much smaller than a typical IC, and explains why the RFID chip doesn't break if the tag is flexed. The biggest problem I had with the die photos was making sure I didn't lose the chip. If I brushed against the chip it could stick to my finger and vanish until I carefully searched my hands to find it. The image below shows the Monza 4, a similar but slightly larger RFID chip, on top of a penny, next to a grain of salt. (A couple months ago, I wrote about the Monza 4 chip and how it is times the Bay to Breakers race.) The RFID chip used to identify runners is very small, about the size of one of the letters on a penny. A grain of salt (next to R) and the RFID chip (on top of U). This chip has four antenna contacts. The antenna Closeup of the RFID antenna and chip. The chip is the black speck in the center above DogBone, below the + sign. The two halves of the antenna are seemingly shorted together, but that's an important part of the RF impedance matching. The antenna seems straightforward at first—two metal strips connected to the chip. But if you look more closely, you'll notice that the strips are joined together above the chip, which would short out the signal. How does this work? The short answer is it's RF magic. The longer answer is the antenna is carefully designed to match impedance between the transmitter and the chip, so as much power as possible is received by the chip. The central part of the antenna is the "loop" and the two long parts of the antenna are the "dipole". The loop doesn't short out the dipole, but instead they work together. The area of the loop acts as an antenna, and the dipole provides the appropriate impedance so the system resonates at the right frequency. The "dogbone" antenna shape isn't artistic but helps fit a longer dipole into the available area. RFID antennas are explained in more detail in this application note. The tag (combining the antenna and chip) is produced by Smartrac (whose name is barely visible under the black text), and sells for about 13 cents. The RFID system is similar in some ways to the NFC (near-field communication) that smart phones use for tap-and-pay. The following infographic summarizes the differences (full size). This infographic is courtesy of atlasRFIDstore. Conclusion The RFID chips used for race timing are very small but include a lot more complexity than you'd expect. I took some die photos of the Monza R6 chip that show the analog and digital circuitry crammed into a piece of silicon the size of a grain of salt. The chip manages to power itself off the radio signal, allowing it to operate without a battery. This circuitry supports a complex communication protocol between the RFID tag and the reader. The foil antenna is carefully designed to maximize power transfer to the chip. All this is combined into a tag that sells for under 13 cents. I announce my latest blog posts on Twitter, so follow me at kenshirriff.
Hello 8th graders, Because we are human and humane, we will be doing a virtual frog dissection today. If you would like to read about the plight of frogs in the world and some discussion of why it is best to go with virtual dissection, try here: http://pcrm.org/research/edtraining/dissectionalt There are many more, but this is concise and factual. YOU WILL NEED YOUR HEADPHONES. To begin today's lab, you will visit the following link and work your way through the exercise, one video and page at a time. Some of the information is probably known to you. When you get to the virtual exercise, do it! http://www.mhhe.com/biosci/genbio/virtual_labs/BL_16/BL_16.html If you want to feel like you've really poked around inside a dead frog, try this link: http://www.biologycorner.com/worksheets/frog_alternative.html It uses a real frog for the demonstrations. There will be a frog quiz tomorrow, so be sure to take notes on structures and procedures. Have fun!
This is what's written in Arthur Spiderwick's Field Guide to the Fantastical World Around You about Sprites. Dazzling in colour and about the size of large insects, sprites have glistening membranous wings. In fact, they are often confused with exotic insects or flowers at first glance. Considered by many to be the most common type of faerie, sprites prefer to live in deep woods and make their homes high in the branches of trees. They particularly love to live in forests inhabited by treefolk an
A fruit-farmer/photographer uses his camera to meticulously record the species he breeds and grows, adding his loving photographic vision to a long lineage of botanical art.
Please include your name, your pronouns, and the signs or messages you have seen in the box. Please also let me know if there is a pantheon I need to stick to. If you feel like there is more than one, please include that. This reading is not for soul family identification, only for deities who might be reaching out to you. This listing can also be used for infernal, PCEs, and angels as well. This reading will take up to two weeks, depending on our work load. We will message with an estimate promptly after you order. I will use a mix of several forms of divination depending on the deities' preference, this could be bibliomancy, pendulum, oracle, tarot, osteomancy, tea leaves, or wax readings. I will message you your results, some information about the deities or beings in question, and also any other information I feel called to include (myths, offering information, my personal experiences with them, etc). I WILL NOT DO CLOSED PANTHEONS SINCE I AM WHITE.
If you want to identify any egg but have no proper chart to get quick points to identify it. you can our easy-to-understand bird egg identification chart.
Printable Seashells Montessori 3 part cards. Ocean shells World Flash Cards. Nomenclature Cards. Montessori three part cards are a fun way for children to help with reading, language development, vocabulary, object identification, matching, and more. These cards are made using my original watercolor artwork. These Montessori-Inspired 3-Part Cards include vocabulary words for various seashells. ::::: YOU WILL RECEIVE :::::: 30 PDF pages Each page size 8.5 x 11inches (letter size), 4 cards per page. Each card 3.75 x 5 inches 22 control cards print fonts 22 control cards cursive fonts 22 label cards print fonts 22 label cards cursive fonts 22 tracing cards ::::: YOU MIGHT ALSO LIKE ::::: Seashells Montessori Poster https://www.etsy.com/listing/1027276690/ Seashells Count and Clip Cards, Number 1 - 20 https://www.etsy.com/listing/1039753969/ ::::: INSTANT DOWNLOAD ::::: These are printable files that you can print at home or at any printer. !!! No physical item will be shipped. I recommend printing on heavier cardstock is encouraged for added strength. You can laminate each card for multiple use. ::::::: These are printable files. No physical item will be shipped::::::: Files are instant download. Upon completed payment you will receive an email with a link to your product downloads. You may also access your downloads by viewing your Etsy Purchases page. :::::: TERMS OF USE ::::::: All rights reserved. This file is for PERSONAL USE ONLY and is not to be resold or used for personal profit/benefit. My Shop https://www.etsy.com/shop/EazzyLearning Instagram https://www.instagram.com/eazzylearning/
The sparrow has been depicted throughout history as a harbinger of good and bad luck, an indicator of love, a religious symbol of God's mercy and even an omen of death.
FREE printable CVC cookie words literacy activity for pre-k & kindergarten classes to work with while practicing letter sounds and early reading skills!
Take control of your home away from the most common household pest in the world — the cockroach.
A kerti szarkaláb (Consolida ajacis) a boglárkafélék családjába tartozó Eurázsia területén őshonos egynyári virág. Igazán mutatós, és könnyed megjelenésű kb. 70-80cm-es magasságot elérő növény.
En los años setenta se desarrollaron infinidad de accesorios para promover el consumo de la droga que hoy es considerada el motor de la guerra en Colombia.
