เลเซอร์ for Dummies
เลเซอร์ for Dummies
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กำลังขยายสูงพิเศษบนพื้นที่ขนาดกลาง ให้เอาต์พุตสูง
Some programs of lasers depend upon a beam whose output electrical power is continuous as time passes. This type of laser is referred to as a ongoing-wave (CW) laser. Quite a few forms of lasers may be built to function in ongoing-wave manner to fulfill these kinds of an software. Quite a few of such lasers lase in various longitudinal modes simultaneously, and beats amongst The marginally diverse optical frequencies of All those oscillations will develop amplitude versions in time scales shorter than the spherical-trip time (the reciprocal of your frequency spacing involving modes), usually a couple of nanoseconds or much less.
Fuel lasers employing numerous gases happen to be developed and useful for many functions. The helium–neon laser (HeNe) can function at a number of wavelengths, even so, the overwhelming majority are engineered to lase at 633 nm; these reasonably very low-Charge but hugely coherent lasers are exceptionally common in optical study and academic laboratories. Professional carbon dioxide (CO2) lasers can emit lots of hundreds of watts in just one spatial mode which can be concentrated into a small location. This emission is inside the thermal infrared at ten.6 μm; these lasers are regularly Employed in field for slicing and welding. The efficiency of a CO2 laser is unusually significant: in excess of 30%.[66] Argon-ion lasers can function at a number of lasing transitions among 351 and 528.
เริ่มทำความเช็ดทำความสะอาดผิว เช่น คราบเลือดในบางจุดที่มีเลือดออก และทำการทายาเป็นอันเสร็จ
เครื่องขึ้นรูปกระดาษทิชชูรูปพระจันทร์เสี้ยว
ควรบำรุงผิวให้มีความชุ่มชื้น ด้วยการทามอยเจอร์ไรเซอร์เป็นประจำทุกวันก่อนทำ
โครงสร้างของท่อเลเซอร์ออสซิลเลเตอร์
The pursuit of the high-quantum-Vitality laser working with transitions involving isomeric states of the atomic nucleus has long been the subject of broad-ranging educational exploration Considering that the early nineteen seventies. Considerably of this is summarized in three review articles.
The YAL-1, a modified Boeing 747 using a laser weapon on board. It absolutely was canceled in December 2011 and scrapped in September 2014. Lasers can be employed as incapacitating non-lethal weapons.[citation required] They can result in non permanent or everlasting eyesight reduction when directed at the eyes. Even lasers with a power output of under one particular watt could potentially cause immediate and long term vision reduction beneath selected ailments, building them likely non-lethal but incapacitating weapons.
For light-weight, this means that any provided transition will only soak up just one individual wavelength of light. Photons with the right wavelength might cause an electron to leap from the reduce to the higher Strength amount. The photon is eaten in this method.
A laser that generates light-weight by by itself พิโค่เลเซอร์ is technically an optical oscillator in lieu of an optical amplifier as suggested through the acronym.[twenty] It's been humorously noted that the acronym LOSER, for "light-weight oscillation by stimulated emission of radiation", would've been much more appropriate.
เครื่องทำกระดาษ เครื่องผลิตกระดาษแบบโฟร์ดริเนียร์
เครื่องทำกระดาษ เครื่องผลิตกระดาษแบบโฟร์ดริเนียร์
โบท็อกซ์ : ดื้อยาได้ แต่ละยี่ห้อผลแตกต่างกัน ฉีดแล้วต้องระวังอะไร ห้ามทานยาอะไร ไม่พอใจ สลายได้มั้ย ใครไม่ควรฉีด ฯลฯ