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1064 - Wikipedia. Disambiguazione – Se stai cercando altri significati, vedi 1064 (disambigua). Il 1064 (MLXIV in numeri romani) è un anno bisestile dell' XI secolo . Indice. 1 Eventi. 1.1 Per luogo. 1.1.1 Europa. 1.2 Per argomento. 1.2.1 Geologia. 1.2.2 Architettura. 2 Nati. 3 Morti. 4 Calendario. 5 Note. 6 Altri progetti. Eventi. Per luogo.
- 1064 (numero)
Proprietà matematiche. È un numero pari. È un numero...
- 1064 (numero)
Proprietà matematiche. È un numero pari. È un numero composto da 16 divisori: 1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064. Poiché la somma dei suoi divisori (escluso il numero stesso) è 1336 > 1064, è un numero abbondante. È un numero semiperfetto in quanto pari alla somma di alcuni (o tutti) i suoi divisori.
References. 1064. The Piazza dei Miracoli in Pisa ( Italy) Year 1064 ( MLXIV) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar . Events. By place. Europe. Summer – King Ferdinand I (the Great) conquers more territory in modern-day Portugal and captures Coimbra.
- Technology
- Applications
- Additional Frequencies
- Physical and Chemical Properties of Nd:YAG
- References and Notes
Nd:YAG lasers are optically pumped using a flashtube or laser diodes. These are one of the most common types of laser, and are used for many different applications.Nd:YAG lasers typically emit light with a wavelength of 1064 nm, in the infrared. However, there are also transitions near 946, 1120, 1320, and 1440 nm. Nd:YAG lasers operate in both pul...
Medicine
Nd:YAG lasers are used in ophthalmology to correct posterior capsular opacification, after cataract surgery, for peripheral iridotomy in patients with chronic and acute angle-closure glaucoma, where it has largely superseded surgical iridectomy, for the treatment of vitreous eye floaters, for pan-retinal photocoagulation in the treatment of proliferative diabetic retinopathy, and to damage the retinain ophthalmology animal research. Nd:YAG lasers emitting light at 1064 nm have been the most w...
Dentistry
Nd:YAG dental lasers have been used for the removal of dental caries as an alternative to drill therapy, although evidence supporting its use is of low quality. They have also been used for soft tissue surgeries in the oral cavity, such as gingivectomy, periodontal sulcular debridement, LANAP, and pulpotomy. Nd:YAG dental lasers have also been shown to be effective at treating and preventing dental hypersensitivity, as an adjunct for periodontal instrumentation, and for the treatment of recur...
Manufacturing
Nd:YAG lasers are used in manufacturing for engraving, etching, or marking a variety of metals and plastics, or for metal surface enhancement processes like laser peening. They are extensively used in manufacturing for cutting and welding steel, semiconductors and various alloys. For automotive applications (cutting and welding steel) the power levels are typically 1–5 kW. Super alloy drilling (for gas turbine parts) typically uses pulsed Nd:YAG lasers (millisecond pulses, not Q-switched). Nd...
For many applications, the infrared light is frequency-doubled or -tripled using nonlinear optical materials such as lithium triborate to obtain visible (532 nm, green) or ultraviolet light. Cesium lithium borate generates the 4th and 5th harmonics of the Nd:YAG 1064 nm fundamental wavelength. A green laser pointer is a frequency doubled Nd:YVO4 di...
Properties of YAG crystal
1. Formula: Y3Al5O12 2. Molecular weight: 596.7 3. Crystal structure: Cubic 4. Hardness: 8–8.5 (Mohs) 5. Melting point: 1970 °C (3540 °F) 6. Density: 4.55 g/cm3
Properties of Nd:YAG @ 25 °C
1. Formula: Y2.97Nd0.03Al5O12 2. Weight of Nd: 0.725% 3. Atoms of Nd per unit volume: 1.38×1020 /cm3 4. Charge state of Nd: 3+ 5. Emission wavelength: 1064 nm 6. Transition: 4F3/2 → 4I11/2 7. Duration of fluorescence: 230 μs 8. Thermal conductivity: 0.14 W·cm−1·K−1 9. Specific heat capacity: 0.59 J·g−1·K−1 10. Thermal expansion: 6.9×10−6 K−1 11. dn/dT: 7.3×10−6 K−1 12. Young's modulus: 3.17×104 K·g/mm−2 13. Poisson's ratio: 0.25 14. Resistance to thermal shock: 790 W·m−1
Siegman, Anthony E. (1986). Lasers. University Science Books. ISBN 978-0-935702-11-8.Koechner, Walter (1988). Solid-State Laser Engineering (2nd ed.). Springer-Verlag. ISBN 978-3-540-18747-9.Il Concilio di Mantova fu il sinodo di vescovi tedeschi e italiani che si tenne a Mantova il 31 maggio 1064, giorno di Pentecoste. Storia
Portale Medioevo. 1063 — 1065. Pagine nella categoria "Edifici costruiti nel 1064" Questa categoria contiene un'unica pagina, indicata di seguito. Chiesa di San Tommaso Apostolo (Ascoli Piceno) Categorie: Eventi del 1064. Edifici per anno di costruzione. Categoria nascosta: Errori di compilazione del template Interprogetto - template vuoto.
The siege of Coimbra in 1064 or the definitive conquest of Coimbra by Christian forces took place in 1064, from January to July; it ended on 9 July 1064, [contradictory] a Friday, when the king, Ferdinand I of Leon, captured the city from the Muslims.
