Runner-up, 2024 Columbia University Press Distinguished Book AwardAtoms are unfathomably tiny. It takes fifteen million trillion of them to make up a single poppy seedgive or take a few billion. And theres hardly anything to them: atoms are more than 99.9999999999 percent empty space. Yet scientists have learned to count these slivers of near nothingness with precision and to peer into their internal states. In looking so closely, we have learned that atoms, because of their inimitable signatures and imperturbable internal clocks, are little archives holding the secrets of the past.David J. Helfand reconstructs the history of the universeback to its first microsecond 13.8 billion years agowith the help of atoms. He shows how, by using detectors and reactors, microscopes and telescopes, we can decode the tales these infinitesimal particles tell, answering questions such as: Is a medieval illustrated prayer book real or forged? How did maize cultivation spread from the highlands of central Mexico to New England? What was Earths climate like before humans emerged? Where can we find clues to identify the culprit in the demise of the dinosaurs? When did our planet and solar system form? Can we trace the births of atoms in the cores of massive stars or even glimpse the origins of the universe itself?A lively and inviting introduction to the building blocks of everything we know, The Universal Timekeepers demonstrates the power of science to unveil the mysteries of unreachably remote times and places. David J. Helfand reconstructs the history of the universeback to its first microsecond 13.8 billion years agowith the help of atoms. <br><br> Autorid: David Helfand <br>
The Yellow Wallpaper (original title: "The Yellow Wall-paper. A Story") is a 6,000-word short story by the American writer Charlotte Perkins Gilman, first published in January 1892 in The New England Magazine. It is regarded as an important early work of American feminist literature, illustrating attitudes in the 19th century toward women's health, both physical and mental. Presented in the first person, the story is a collection of journal entries written by a woman whose physician husband (John) has rented an old mansion for the summer. Forgoing other rooms in the house, the couple moves into the upstairs nursery. As a form of treatment, the unnamed woman is forbidden from working, and is encouraged to eat well and get plenty of exercise and air, so she can recuperate from what he calls a "temporary nervous depression - a slight hysterical tendency", a diagnosis common to women in that period. She hides her journal from her husband and his sister the housekeeper, fearful of being reproached for overworking herself. The room's windows are barred to prevent children from climbing through them, and there is a gate across the top of the stairs, though she and her husband have access to the rest of the house and its adjoining estate. The story depicts the effect of understimulation on the narrator's mental health and her descent into psychosis. With nothing to stimulate her, she becomes obsessed by the pattern and color of the wallpaper. "It is the strangest yellow, that wall-paper! It makes me think of all the yellow things I ever saw - not beautiful ones like buttercups, but old foul, bad yellow things. But there is something else about that paper - the smell! ... The only thing I can think of that it is like is the color of the paper! A yellow smell." In the end, she imagines there are women creeping around behind the patterns of the wallpaper and comes to believe she is one of them. She locks herself in the room, now the only place she feels safe, refusing to leave when the summer rental is up. "For outside you have to creep on the ground, and everything is green instead of yellow. But here I can creep smoothly on the floor, and my shoulder just fits in that long smooch around the wall, so I cannot lose my way." Source: Wikipedia
UNI-T UT373 non-contact tachometerThe UNI-T UT373 non-contact tachometer is a reliable tool for measuring the speed of motors and other machines, providing safe and precise results without the need for contact with a rotating object. The device allows measurement in RPM units, offering automatic range selection and displaying values up to 99999, with an overload ("OL") indication function. The UT373 features Max/Min functions, result retention (Data Hold), active measurement indication (Signal Trigger/Laser-On), as well as a low charge indicator and automatic shutdown. The backlit LCD display ensures readability in all operating conditions, and CE and UKCA certifications confirm high quality and safety standards.Functionality that makes everyday work easierThe UT373 is designed for quick and easy operation - automatic range selection allows for instant accurate results, and Max/Min functions help monitor extreme values during tests. The data retention function allows you to conveniently save the result on the display, which is extremely useful when analyzing measurements. The tachometer indicates laser activity and low charge status, ensuring uninterrupted operation without unnecessary interruptions.Robust design and convenience of useThe UNI-T UT373 features a lightweight, ergonomic design and the ruggedness necessary for industrial and workshop environments. Thanks to the backlit LCD display, reading the results is possible even in dimly lit areas. Automatic shutdown of the device after a period of inactivity helps save energy and prolongs battery life. The UT373 is the ideal solution for professionals who value safety, precision and comfort every day.Includedtachometerbatteriesreflective tapeuser's manual ManufacturerUNI-TModelUT373Power supply3 × battery 1.5 V (R03)Display5-digit segment code; maximum value 99999ColorRed, grayWeight85 g (without battery)Dimensions183.8 × 56 × 34 mmSpeed measurement (RPM)10.0 ~ 9999.9 RPM (resolution: 0.1 RPM)Speed measurement (RPM)10000 ~ 99999 RPM (resolution: 1 RPM)RPM counting0 ~ 99999 counts (resolution: 1)Accuracy:Speed measurement: ±(0.04%+2); RPM counting: ±1Automatic range selectionSupportedAutomatic shutdownSupportedLow battery indicatorBuilt-inActive laser indicationSupportedData hold functionSupportedMaximum and minimum value recording (MAX/MIN)SupportedSwitching of speed/counting functionSupportedOverload signalingSupportedLCD display backlightingBuilt-inRefresh rate1 s to 7 s (for speeds >120 RPM: 1 s)Sensor typePhotodiode and laser tubeMeasurement distance50 mm ~ 200 mmMeasurement angle±30° from the perpendicular axisDrop test1 m
Uni-T UT658A USB TesterThe Uni-T UT658A is a compact USB tester designed to monitor the parameters of chargers, power banks, USB Type-A cables, and other power supply devices. The device measures voltage, current, energy, capacitance, equivalent circuit resistance, and D+ and D- line voltages, allowing you to quickly assess the power quality and condition of the tested accessory. It is a practical tool for service, engineering, and everyday equipment testing.Key measurements in a handy formThe UT658A model supports USB Type-A ports and 2.0 and 3.0 protocols, offering voltage measurement in the range of 4–24 V DC and current from 0.05 to 3 A DC. The device also allows monitoring of capacitance up to 99,999 mAh, energy up to 1,000 Wh, equivalent circuit resistance from 1 to 480 Ω, and D+ and D- voltages up to 3.3 V. Support for the QC 3.0 protocol enhances the tester’s utility when working with fast-charging devices.Convenient data logging and compact designThe UT658A allows you to save up to 10 data sets, with a maximum recording time of 99 h 59 min 59 s at a resolution of 1 s. Simultaneous on-screen display of key parameters facilitates daily work and speeds up result analysis. Weighing 50.6 g and measuring 93 × 45 × 13 mm, the model is significantly more compact, making it well-suited as a handy tool for quick diagnostics.Included in the setUSB testerUser manual SpecificationsManufacturerUni-TModelUT658ATypeUSB testerInput and output portsUSB Type-AData and charging protocol2.0 / 3.0Voltage range4~24V DCVoltage resolution0.01VCurrent range0.05~3A DCCurrent resolution0.01ACapacity0~99999mAhCapacity resolution1mAhEnergy0~1000WhCircuit equivalent resistance measurement1~480ΩUSB data cable D+ voltage0~3.3VUSB data cable D- voltage0~3.3VData storage10 setsMaximum recording time99h 59min 59secTime resolution1sFast charging protocolQC 3.0ColorWhiteWeight50.6gDimensions93mm x 45mm x 13mmCertificationsCE, UKCA
UNI-T UT658DUAL USB socket testerUNI-T UT658DUAL is a second-generation USB tester that allows you to comprehensively analyze chargers, cables and devices powered by USB Type A and Type C ports. With it you can not only check voltage and current parameters, but also measure actual power consumption, capacity of charged devices and circuit resistance. This is an indispensable tool for engineers, electronics engineers, equipment testers and home users who want to have full control over the quality and performance of their equipment.Full picture of charging parametersThe UT658DUAL displays all key information on an easy-to-read screen: voltage, current, power, capacity, energy consumption and circuit resistance value. It supports voltages from 4 to 24 V DC and current up to 3 A for USB-A port and up to 5 A for USB-C, allowing it to test even the most demanding chargers and powerbanks. The device also recognizes QC 3.0 (for USB-A) and QC 4.0 (for USB-C) fast charging protocols, making it a universal tester for modern mobile devices.Precision and measurement memoryThe tester can store up to 10 sets of data, making it easy to compare measurement results under different conditions and with different devices. Battery capacity measurement is possible with a resolution of 1 mAh (up to 99999 mAh), and energy is recorded up to 1000 Wh. The maximum recording time is as long as 99 hours 59 minutes 59 seconds - ideal for long-term load and comparison tests.Easy to use, ready for actionThe UT658DUAL is powered directly from a USB port and requires no additional batteries. Its compact size and lightweight design (65.8 g) make it extremely portable and easy to transport. Thanks to its single-screen display system and intuitive operation, it will work well in laboratory conditions as well as during service or home tests.IncludedUNI-T UT658DUAL USB testerUser manual (English) ManufacturerUNI-TManufacturer codeUT658DUALCertificationsCE, UKCASupported connectorsUSB Type-A, USB Type-CVoltage range4-24 VDC, resolution: 0.01 VCurrent range (USB-A)0.05-3 A DC, resolution: 0.01 ACurrent range (USB-C)0.05-5 A DC, resolution: 0.01 ACapacity0-99999 mAh, resolution: 1 mAhEnergyUp to 1000 WhCircuit resistance1-480 ΩVoltage measurement on D+/D- lines0-3,3 VFast charging protocolQC 3.0 (USB-A), QC 4.0 (USB-C)Recording timeUp to 99 h 59 min 59 s, resolution: 1 sData recording10 setsPower supplyfrom USB portCase colorwhiteNet weight65,8 gDimensions93 × 55 × 13 mm
Uni-T UT658LOAD USB TesterThe Uni-T UT658LOAD is a USB tester designed to test chargers, power banks, USB Type-A cables, and other power supply devices. The device measures voltage, current, energy, capacitance, equivalent circuit resistance, and the voltages of the D+ and D- lines, allowing for a more accurate assessment of the operating parameters of the tested equipment. An additional advantage of this model is its built-in electrical load, which expands its range of applications during service, production, and hobbyist testing.Wide measurement range and built-in loadThe UT658LOAD model supports USB Type-A ports and 2.0 and 3.0 protocols, measuring voltage in the range of 4–24 V DC and current from 0.05 to 3 A DC. The device also allows monitoring of capacity up to 99,999 mAh, energy up to 1,000 Wh, equivalent circuit resistance from 1 to 480 Ω, and D+ and D- data line voltage in the range of 0–3.3 V. Built-in loads of 0.5 A, 1 A, 2 A, and 3 A with a maximum power of 60 W allow for more convenient testing of the behavior of power supplies and chargers under load.Clear display and convenient data loggingThe UT658LOAD displays the most important parameters simultaneously on a single screen, facilitating quick evaluation of results. The device supports 10 sets of data memory, a maximum recording time of 99 h 59 min 59 s, and the QC 3.0 fast charging protocol. With dimensions of 122 × 53 × 27 mm and a weight of 114.4 g, the model remains handy and convenient for everyday use.Included in the setUSB testerUser manual SpecificationsManufacturerUni-TModelUT658LOADTypeUSB testerInput and output portsUSB Type AData and charging protocol2.0 / 3.0Voltage range4~24V DCVoltage resolution0.01VCurrent range0.05~3A DCCurrent resolution0.01ACapacity0~99999mAhCapacity resolution1mAhEnergy0~1000WhCircuit Equivalent Resistance Measurement1~480ΩUSB Data Cable D+ Voltage0~3.3VUSB Data Cable D- Voltage0~3.3VData Storage10 setsElectrical Load0.5A / 1A / 2A / 3AMaximum power60WMaximum recording time99h 59min 59secTime resolution1sFast charging protocolQC 3.0ColorWhiteWeight114.4gDimensions122mm x 53mm x 27mmCertificationsCE, UKCA
Tootekood: A30499999GTIN: 9780649114023Ajalugu ja arheoloogia
Trieste Publishing has a massive catalogue of classic book titles. Our aim is to provide readers with the highest quality reproductions of fiction and non-fiction literature that has stood the test of time. The many thousands of books in our collection have been sourced from libraries and private collections around the world.The titles that Trieste Publishing has chosen to be part of the collection have been scanned to simulate the original. Our readers see the books the same way that their first readers did decades or a hundred or more years ago. Books from that period are often spoiled by imperfections that did not exist in the original. Imperfections could be in the form of blurred text, photographs, or missing pages. It is highly unlikely that this would occur with one of our books. Our extensive quality control ensures that the readers of Trieste Publishing's books will be delighted with their purchase. Our staff has thoroughly reviewed every page of all the books in the collection, repairing, or if necessary, rejecting titles that are not of the highest quality. This process ensures that the reader of one of Trieste Publishing's titles receives a volume that faithfully reproduces the original, and to the maximum degree possible, gives them the experience of owning the original work.We pride ourselves on not only creating a pathway to an extensive reservoir of books of the finest quality, but also providing value to every one of our readers. Generally, Trieste books are purchased singly - on demand, however they may also be purchased in bulk. Readers interested in bulk purchases are invited to contact us directly to enquire about our tailored bulk rates.
