Genießen Sie einen leisen und effizienten Luftstrom mit dem Noctua NF-A12x25 ULN perfekt für Hochleistungs-Rigs bei denen Ruhe Priorität hat. Eigenschaften Noctua NF-A12x25 ULN Ultraleise maximale Leistung. Der Noctua NF-A12x25 ULN wurde für Umgebungen entwickelt in denen ein leiser Betrieb entscheidend ist wie beispielsweise Hochleistungssysteme Workstations und anspruchsvolle Gaming-Setups. Mit einer maximalen Drehzahl von nur 1200 U/min die über einen Low-Noise-Adapter problemlos auf 900 U/min einstellbar ist erreicht er einen Geräuschpegel von nur 12 1 dB(A) bei gleichzeitig optimalem Luftstrom von 55 7 m³/h. Hochwertiges Sterrox LCP-Material und Metallverstärkung. Dieser Lüfter ist mit dem exklusiven Sterrox LCP-Polymer und Metallverstärkungen an Welle und Halterung gefertigt und zeichnet sich durch seine Formstabilität Fertigungspräzision und Langlebigkeit aus – ideal für den dauerhaften anspruchsvollen Einsatz (> 150.000 Stunden Lebensdauer). Noctuas fortschrittliche Technologien AAO (Advanced Acoustic...
LMBGM AR9 UHF Mono Wireless In Ear Monitor System Transmitter and Beltpack Receiver for Studio, Band Rehearsal and Live Performance (AR9 Pro-2) KEMJAR92BK
LMBGM AR9 Pro Series Wireless In-Ear Monitoring System Adopting professional mono transmission technology, it provides a wide frequency range of 50Hz-20kHz, with
Yealink WH64 Workstation Mono Kabelloses DECT & Bluetooth Headset, Noise Cancelling Mikrofon, Touchscreen, Kompatibel mit Teams & IP-Telefonen, Freisprecheinrichtung für Büro und Homeoffice WH64 Workstation Mono-EU
Maximale Flexibilität durch DECT & Bluetooth Dual-Mode:Genießen Sie kabellose Freiheit mit diesem wireless headset, das zwei Technologien in einem vereint: Dank DECT und Bluetooth 5.3 können Sie nahtlos zwischen Ihrem Deskphone (DECT) und PC/Laptop (Bluetooth) wechseln – ganz ohne Basisstation. Die Reichweite beträgt bis zu 185 m im DECT-Modus und 50 m im Bluetooth-Modus – ideal für Büro, Homeoffice oder Störungsfreie Kommunikation mit Acoustic Shield 2.0:Dieses wireless headset mit noise cancelling nutzt drei integrierte MEMS-Mikrofone und die intelligente Acoustic Shield 2.0-Technologie, um Umgebungsgeräusche wie Tastaturgeklapper oder Kollegengespräche automatisch zu unterdrücken. So hören Sie und Ihr Gesprächspartner stets klare Stimmen – perfekt für laute Großraumbüros oder das heimische Arbeitszimmer. All-in-One Workstation mit 4-Zoll-Touchscreen:Die innovative Basisstation ist weit mehr als nur eine Ladestation: Der 4-Zoll-kapazitive Touchscreen (480×800) ermöglicht intuitive Anrufsteuerung, Gerätewechsel und Audioeinstellungen. Gleichzeitig dient sie als HD-Freisprecheinrichtung für spontane Meetings und als USB-Docking-Hub mit zwei USB-A- und einem USB-C-Port – perfekt für aufgeräumte Schreibtische. Leichtester Tragekomfort für den ganzen Tag:Mit nur 92 Gramm gehört das WH64 Mono zu den leichtesten Business-Headsets seiner Klasse. Das ergonomische Design und der flexible, drehbare Mikrofonarm passen sich perfekt an Ihre Kopfform an – für ermüdungsfreies Arbeiten, selbst bei stundenlangen Telefonaten oder Videokonferenzen. Breite Kompatibilität mit Teams, IP-Telefonen & UC-Plattformen:Das WH64 Mono ist zertifiziert für Microsoft Teams und nahtlos kompatibel mit IP-Telefonen und UC-Lösungen führender Anbieter wie Cisco, Zoom oder Avaya. So integrieren Sie es mühelos in Ihre bestehende Kommunikationsumgebung – ob Softphone oder Tischtelefon.
Im Band 2 der Gitarrenschule „Acoustic Pop Guitar“ von Michael Langer werden Melodieverzierungen, erweiterte Akkorde, Ghost Notes und andere Techniken vermittelt. Mit eigenständigen Akustik-Gitarren-Versionen von 18 bekannten Popsongs. Inhalt:Hey Joe — Jimi Hendrix / Let It Be — The Beatles / Angie — The Rolling StonesBoth Sides Now — Joni Mitchell / Hotel California — Eagles If You Could Read My Mind — Gordon Lightfoot / What Can I Do — The CorrsTeach Your Children — Crosby, Stills, Nash & Young / Don’t Worry Be Happy — Bobby McFerrin I Still Haven’t Found What I’m Looking For — U2 / More Than Words — ExtremeGames People Play — Joe South Nobody Knows You When You’re Down And Out — Eric ClaptonTalkin’ Bout A Revolution — Tracy Chapman / Can’t Buy Me Love — The BeatlesEvery Breath You Take — The Police / Killing Me Softly — Roberta FlackWalking In Memphis — Marc Cohn
Dux Edition Acoustic Pop Guitar 2, Sachbücher von Michael Langer
Im Band 2 der Gitarrenschule 'Acoustic Pop Guitar' von Michael Langer werden Verzierungen, erweiterte Akkorde, Ghost Notes und andere Techniken gelehrt. Es enthält originale akustische Gitarrenversionen von 18 bekannten Popsongs. Inhalte: Hey Joe - Jimi Hendrix, Let It Be - The Beatles, Angie - The Rolling Stones, Both Sides Now - Joni Mitchell, Hotel California - Eagles, If You Could Read My Mind - Gordon Lightfoot, What Can I Do - The Corrs, Teach Your Children - Crosby, Stills, Nash & Young, Don't Worry Be Happy - Bobby McFerrin, I Still Haven't Found What I'm Looking For - U2, More Than Words - Extreme, Games People Play - Joe South, Nobody Knows You When You're Down and Out - Eric Clapton, Talkin' Bout A Revolution - Tracy Chapman, Can't Buy Me Love - The Beatles, Every Breath You Take - The Police, Killing Me Softly - Roberta Flack, Walking in Memphis - Marc Cohn.
Im Band 2 der Gitarrenschule „Acoustic Pop Guitar“ von Michael Langer werden Melodieverzierungen, erweiterte Akkorde, Ghost Notes und andere Techniken vermittelt. Mit eigenständigen Akustik-Gitarren-Versionen von 18 bekannten Popsongs. Inhalt:Hey Joe — Jimi Hendrix / Let It Be — The Beatles / Angie — The Rolling StonesBoth Sides Now — Joni Mitchell / Hotel California — Eagles If You Could Read My Mind — Gordon Lightfoot / What Can I Do — The CorrsTeach Your Children — Crosby, Stills, Nash & Young / Don’t Worry Be Happy — Bobby McFerrin I Still Haven’t Found What I’m Looking For — U2 / More Than Words — ExtremeGames People Play — Joe South Nobody Knows You When You’re Down And Out — Eric ClaptonTalkin’ Bout A Revolution — Tracy Chapman / Can’t Buy Me Love — The BeatlesEvery Breath You Take — The Police / Killing Me Softly — Roberta FlackWalking In Memphis — Marc Cohn
Geekria Tasche Kopfhörer für Bose QuietComfort QC35, QC25, QC15, Noise Cancelling Headphones 700, SoundLink, SoundTrue Headphone, Schutztasche Hard Tragetasche EU-1-XFDZ-EJP-EJB-0029-26
BETTER PROTECTION - A hard shell case with a soft interior layer, the Geekria earphones case protects from dust, scratches, scuffs, shock, crush and moisture. Case are crafted with superior materials that are individually inspected and high-quality zippers tested for strength and reliability. TRAVEL FRIENDLY - This hard case for headphones is lightweight and compact to fit in your backpack, carry-on or luggage for improved traveling protection. Case has plenty of space to organize other accessories like headphone cables, amplifier (AMP), earpads, iPod, flash disk, power bank, phone or charger during travel. HIGHLY COMPATIBLE - Hard shell case fits a wide range of brands, including Bose QuietComfort QC35, QC3, QC25, QC2, QC15 Acoustic Noise Cancelling Headphones, Around-Ear AE2w, AE2i, AE2, AE. SoundLink around-ear wireless headphones II, On-Ear, OE, OE2, OE2i, SoundTrue. Case dimensions 7.87 x 6.89 x 2.13 inches (20 X 17.5 X 5.4 cm) See full list of headphones in product description. SATISFACTION GUARANTEE - Every Geekria product is backed by superior quality, reliable customer service. If the case does not fit your headphone or break in 1 year, GeekriaDirect will replace it with a new one or full refund. No question asked. Package Contents: Headphone Case X 1
Creative Sound BlasterX AE-5 Plus SABRE32 Hochauflösende PCI-e-Gaming-Soundkarte und DAC mit 32-Bit / 384 kHz, Dolby Digital und DTS mit bis zu 122 dB Rauschabstand, RGB-Aurora-Beleuchtungssystem B086W7VGNQ
UNTERSTÜTZT DOLBY DIGITAL UND DTS - Jetzt mit Unterstützung für Dolby Digital Live und DTS-Kodierung für noch mehr Auswahl zur Speisung externer Audiogeräte! Der AE-5 Plus unterstützt außerdem diskretes 5.1- und virtuelles 7.1-Surround sowie die Sound-Blaster-eigene Surround-Virtualisierungstechnik STARKER DISKRETER KOPFHÖRERVERSTÄRKER - Der Sound BlasterX AE-5 Plus ist mit Xamp ausgestattet, unserem speziell entwickelten diskreten Kopfhörerverstärker, der jede Hörmuschel einzeln mit einer Ausgangsimpedanz von 1 Ω versorgt und Kopfhörer in Studioqualität mit bis zu 600 Ω ansteuert, einschließlich planar-magnetischer High-End-Kopfhörer REINSTE KLANGQUALITÄT - Mit dem SABRE32 PCI-e-DAC der Extraklasse und einer Wiedergabe bis zu 32 Bit / 384 kHz sowie 122 dB Rauschabstand, extrem geringer Verzerrung und Jitter liefert der AE-5 Plus mit Leichtigkeit hochauflösenden Klang für Spiele, Musik und Filme. Mit einem Wort: Der AE-5 Plus wird auch die Erwartungen der anspruchsvollsten Audioliebhaber an makellosen Klang und starke Leistung bei weitem übertreffen RGB FÜR IHR GAMING-SETUP - Der AE-5 Plus hat anpassbare RGB-LEDs am Gehäuse der Platine und verfügt zudem über einen mitgelieferten RGB-LED-Streifen. Genießen Sie eine Symphonie aus Licht und Klang mit 16,8 Millionen Farben in verschiedenen Mustern zur Auswahl, gesteuert über die Sound-Blaster-Command-Software für den PC. Impedanz: 16 – 600 Ohm UNGLAUBLICHE VERARBEITUNGSLEISTUNG - Die Sound Blaster Command Software bietet hardwarebasierte Klangverbesserungen und vollständige Steuerung der Audioausgabe über die Sound Blaster Acoustic Engine für ein vollständig individuelles Klangerlebnis, das klare Stimmen, präzise Cues und Bassverstärkung liefert
Perlisten Audio S5t, THX Dominus Standlautsprecher (Paarpreis) With the success of the S7t and R5t, the request for the S5t tower for slightly smaller rooms became too numerous to ignore. A world class 2-channel little brother to the S7t with nearly the same SPL, sensitivity, and low frequency output. The S5t can also be sealed or vented for the best integration into any room, and the same exquisite DPC array, for THX certified Dominus surround or Ultra LCR home theater applications. Proof that a speaker can do both applications seamlessly. It',s all in the details Borrowing its technology from their flagship S7t. The more modestly sized S5t mirrors many of the S7t attributes. Featuring our proprietary DPC-Array controlling Mid/High frequencies, centered by our finest 28mm Beryllium dome and dual 28mm TPCD ultra-lightweight domes. All transducers are developed ground up by their engineers – bringing decades of research, culminating in this world class design. Perlisten Audio teamed up with companies in the USA and Sweden to bring modern material science to hi-fi. Utilizing advanced Comsol acoustical modeling, their DPC-array is the result of 18 months of painstaking simulations and prototyping. The result is one of the most technologically advanced loudspeakers available. This new tweeter/waveguide DPC-Array delivers amazing accuracy, smoothness, and directivity control to handle the critical vocal range and delicate treble. All S-Series speakers share the same DPC-Array and benefit from our unique timbre matching technique across the entire series. Custom bass drivers made from thin-ply carbon diaphragms (TPCD) can be configured as bass reflex or acoustic suspension and adjusted for listener preference. True full range performance with unparalleled dynamic range and musical finesse. Technical Details Enclosure alignment: 3-way bass reflex / acoustic suspension Driver compliment: DCP-Array: 28mm(3) Beryllium, 28mm(2) Textreme TPCD, Woofers: 180mm(2) Textreme TPCD Sensitivity: 89.5dB / 2.83v / 1.0m Impedance: 4Ω nominal / 3.0Ω min Response Linearity: 80 - 20kHz +,/-1.5dB window Frequency Response (-10dB): Bass reflex: 24 - 32kHz Acoustic suspension: 36 - 32kHz Typical In Room bass extension Bass reflex: 20Hz Acoustic suspension: 23Hz Dimensions (HxWxD): 1119 x 240 x 400mm Weight: 43.2 kg Recommended Amplifier Power: 100 - 300W RMS SPL capability @,1m (100-20kHz): 114.3dB peak. 114.0dB peak
Alfred Music Publishing Company Alfred's Basic Guitar Method 1 (Third Edition) A1021664349
Recognized for over 50 years as the best-paced and most comprehensive guitar method available, Alfred's Basic Guitar Method, Book 1 has introduced over 3 million beginners to the joy of playing guitar. This updated and expanded edition features a new layout, making it easier to read and learn. Now included are blues, country, folk, jazz, and rock styles, plus more pop songs! A DVD with iPod-compatible video has been added for the visual learner, and correlating theory, chord, and pop books ensure that you'll get everything you need from one complete method. Learning to play has never been easier or more fun than with Alfred's Basic Guitar Method---the first and best choice for today's beginning guitar students. Book 1 can be used for acoustic or electric guitar and covers how to hold your guitar, tuning, the basics of reading music, the notes on all six strings, chords, scales, songs, bass-chord accompaniments, and duets. Titles: Singin' in the Rain * Take Me Home Country Roads * Over the Rainbow * Annie's Song * When the Saints Go Marching In.
Little, Brown and Company Still on the Road A1014308551
This is the second volume in Clinton Heylin's magisterial survey of the songs of Bob Dylan. The first volume - Revolution in the Air which is now available in paperback - charted the rise of Bob Dylan from his first jottings to the full expression of genius in songs such as 'Hard Rain Gonna Fall' and 'The Times They Are a Changin''. Still on the Road begins in 1974 with "Blood on the Tracks", the album filled with masterworks such as 'Tangled Up in Blue' and 'Simple Twist of Fate' that heralded a watershed in Dylan's creative journey, and continues to chart his never-ending fascination with music and the art of song up to 2006's "Modern Times". Praise for Revolution in the Air: 'Beg, steal, borrow ... a compelling history of Dylan's mercurial song writing.' Mojo, 5-star review 'Better than any biography could ever be, and a crucial Dylan book' Jonathan Letham 'Valuable resource' Observer 'A gripping new book by Dylan scholar Clinton Heylin so is so far in the deep end that its borderline insane . . [yet] has been devoured with a ravenous, insatiable appetite, and I have even made notes in the margin.' Mark Ellen, Word. 'Terrifically interesting for Dylan nuts' Sunday Herald 'Manna for completists' Metro 'True to form, Heylin digs deep-way deep-into the songs, mixing cold hard facts with illuminating anecdotes.' - Mark Smith, managing editor, Acoustic Guitar
Little, Brown and Company Still on the Road A1014308551
This is the second volume in Clinton Heylin's magisterial survey of the songs of Bob Dylan. The first volume - Revolution in the Air which is now available in paperback - charted the rise of Bob Dylan from his first jottings to the full expression of genius in songs such as 'Hard Rain Gonna Fall' and 'The Times They Are a Changin''. Still on the Road begins in 1974 with "Blood on the Tracks", the album filled with masterworks such as 'Tangled Up in Blue' and 'Simple Twist of Fate' that heralded a watershed in Dylan's creative journey, and continues to chart his never-ending fascination with music and the art of song up to 2006's "Modern Times". Praise for Revolution in the Air: 'Beg, steal, borrow ... a compelling history of Dylan's mercurial song writing.' Mojo, 5-star review 'Better than any biography could ever be, and a crucial Dylan book' Jonathan Letham 'Valuable resource' Observer 'A gripping new book by Dylan scholar Clinton Heylin so is so far in the deep end that its borderline insane . . [yet] has been devoured with a ravenous, insatiable appetite, and I have even made notes in the margin.' Mark Ellen, Word. 'Terrifically interesting for Dylan nuts' Sunday Herald 'Manna for completists' Metro 'True to form, Heylin digs deep-way deep-into the songs, mixing cold hard facts with illuminating anecdotes.' - Mark Smith, managing editor, Acoustic Guitar
Alfred Music Publishing Company Alfred's Basic Guitar Method 1 (Third Edition) A1021664349
Recognized for over 50 years as the best-paced and most comprehensive guitar method available, Alfred's Basic Guitar Method, Book 1 has introduced over 3 million beginners to the joy of playing guitar. This updated and expanded edition features a new layout, making it easier to read and learn. Now included are blues, country, folk, jazz, and rock styles, plus more pop songs! A DVD with iPod-compatible video has been added for the visual learner, and correlating theory, chord, and pop books ensure that you'll get everything you need from one complete method. Learning to play has never been easier or more fun than with Alfred's Basic Guitar Method---the first and best choice for today's beginning guitar students. Book 1 can be used for acoustic or electric guitar and covers how to hold your guitar, tuning, the basics of reading music, the notes on all six strings, chords, scales, songs, bass-chord accompaniments, and duets. Titles: Singin' in the Rain * Take Me Home Country Roads * Over the Rainbow * Annie's Song * When the Saints Go Marching In.
Yamaha THR30 II A WL Mit dem drahtlosen 30-Watt-Verstärker Yamaha® THR30IIA können Sie den Klang Ihrer akustischen Gitarre authentisch in Stereo durch HiFi-Lautsprecher erleben - akustisch-elektrische Gitarre und Gesang, als würden sie in einem Studio produziert. Der THR30 II A WL verfügt außerdem über einen XLR-Mikrofoneingang, integrierte Effekte, Bluetooth®-Unterstützung und eine Line6 Drahtlos-Empfänger, einen eingebauten Akku sowie eine USB-Schnittstelle. Merkmale: Verstärker Typen: 5-Tone Type (3 Acoustic Models, 1 Nylon Model, Flat) Effekte: CHORUS, CHORUS/DELAY, DELAY, SHORT REVERB, LONG REVERB, STEREO IMAGER, MIC/INST REVERB, *COMPRESSOR (*only available in the editor application) Bluetooth Audio/MIDI Kabellose Verbindung mit Line6 G10T Transmitter (nicht im Lieferumfang enthalten) Chromatisches Stimmgerät Regler TONE SELECT, STEREO IMAGER, TONE BLEND, BASS, MIDDLE, TREBLE, EFFECT, REVERB, VOLUME, MIC/INST REVERB, MIC/INST VOLUME, MIC/INST GAIN, USER MEMORY Switch x 5, TAP/TUNER Switch Ein-/Ausgänge: GUITAR INPUT (1/4",), MIC/INST INPUT (XLR, 1/4",), AUX (Stereo Mini), PHONES (Stereo Mini), LINE OUT L/R (1/4", x2), DC IN, USB Audio Class 2.0 COMPLIANT Lautsprecher 3.5", (9 cm) Full Range x 2 Leistung 30W (15W +, 15W), Battery: 15W (7.5W +, 7.5W)
MICHELIN TRAVEL PUBN Michelin Sommerreifen motorcycle-tyres Pilot Sport 4 SUV ( 255/40 R21 102Y XL AO1, Acoustic, EV Suitable, mit Felgenschutzleiste (FSL) ) 786874
Technische Daten: Felgenschutz:Felgenschutz Nasshaftung :A Kraftstoffeffizienz :C Schalldruckpegel [dB]:70 Externs Rollgeräusch / Geräuschemissionen:B Gewicht [kg]:13.26 EPREL-id:1632438 Reifenbreite:255 Breite:255 Reifenquerschnitt:40 Höhe:40 Typ:R Typ:R Reifenabmessung:21 Zoll:21 Lastenindex:102 Lastindex:102 Geschwindigkeitsindex:Y Geschwindigkeitsindex:Y Gruppe:PKW Typ:Pkw Reifenart:So Reifenart:So Reifenmaße:255-40-21 Verstärkt/reinforced/XL:XL M+S:Nein Produktreihe:Pilot Sport 4 SUV Michelin Pilot Sport 4 SUV Geniessen Sie Ihre Fahrt, wir kümmern uns um den Rest! Leidenschaft & Sicherheit Hervorragender Gripp und Sicherheit: 1. Platz beim Nass- und Trockenbremsen FÜR SUV ENTWICKELT Ausgezeichnete Langlebigkeit und eine SUV-geeignete Robustheit Optimaler KOMFORT & GERÄUSCHPEGEL MEHR Komfort für mehr Fahrspass Von automobilherstellern empfohlen Entwickelt mit führenden Automobilherstellern und maßgeschneidert für SUVs MICHELIN PILOT SPORT 4 SUV (AO1) 255/40R21 102Y FSL XL ACOUSTIC Sommerreifen MICHELIN PILOT SPORT
S. Patakis Ellinika B. Method of learning Greek as a foreign language (level B1) A1070383722
The Ellinika series is addressed to those who learn Greek as a foreign language and/or prepare for the Greek Language Exam of the Center for Greek Language (KEG), the Institute for Adult Continuing Education (IDEKE), the University Teaching Schools or other institutions that undertake or may undertake such examinations. The books are mainly written for teaching in class. They can also be used for self-instruction, with the help of a good (bilingual) iconographic dictionary of Greek. The second book of the series, Greek B, corresponds to level B1 of the KEG. like Greek A, which quickly became one of the most popular textbooks of teaching Greek in Greece and abroad, this book contains rich illustration, written and oral exercises of all kinds (phonological, grammatical, editorial, text comprehension etc.), as well as cd-audio with dialogs and acoustic exercises.The sections of this book were tested for several years in adult preparation classes and introduce students to the reality of modern Greek language and society.
One Control 360 AIAB - Bass Preamp, Amp-In-A-Box Effektpedal, reproduziert den Sound und Charakter des Acoustic 360 Preamps, kräftiger, definierter Bass-Sound der optimal ins Band-Gefüge passt, flexible Klangregelung mit 3-Band EQ, Bass -26 dB bis +6 dB bei 32 Hz, Mid -15 dB bis +6 dB bei 600 Hz, Treble -26 dB bis +20 dB bei 3 kHz, entwickelt von Bjorn Juhl, True Bypass, Regler für Volume, Treble, Mid, Bass, seitlicher Schalter für -18 dB Mode, Bypass Fußschalter, Status LED, Gehäuse aus gebürstetem Aluminium, 6,3 mm Mono-Klinken Ein- / Ausgang, Stromversorgung via 9V Batterie oder optionalem 9V DC Netzteil, 2,1 x 5,5 mm Hohlstecker, Polarität (-) innen (Batterie ist nicht im Lieferumfang enthalten), Stromaufnahme 1,5 mA, Abmessungen (L x B x H) 100 x 47 x 46 mm, Gewicht ca. 160 g
Dark energy, the mysterious cause of the accelerating expansion of the universe, is one of the most important fields of research in astrophysics and cosmology today. Introducing the theoretical ideas, observational methods and results, this textbook is ideally suited to graduate courses on dark energy, and will also supplement advanced cosmology courses. Providing a thorough introduction to this exciting field, the textbook covers the cosmological constant, quintessence, k-essence, perfect fluid models, extra-dimensional models, and modified gravity. Observational research is reviewed, from the cosmic microwave background to baryon acoustic oscillations, weak lensing and cluster abundances. Every chapter ends with problems, with full solutions provided, and any calculations are worked through step-by-step.
Dark energy, the mysterious cause of the accelerating expansion of the universe, is one of the most important fields of research in astrophysics and cosmology today. Introducing the theoretical ideas, observational methods and results, this textbook is ideally suited to graduate courses on dark energy, and will also supplement advanced cosmology courses. Providing a thorough introduction to this exciting field, the textbook covers the cosmological constant, quintessence, k-essence, perfect fluid models, extra-dimensional models, and modified gravity. Observational research is reviewed, from the cosmic microwave background to baryon acoustic oscillations, weak lensing and cluster abundances. Every chapter ends with problems, with full solutions provided, and any calculations are worked through step-by-step.