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Silicon single crystal grown in a lab, i.e. the element silicon (Si) in totally pure state in a continuous crystal latice.
This material cut in slices is the base of the electronic industry; in expressions such as "silicon age" or "silicon valley" this is the material that fuels the metaphor.
When we hear the word "crystal" we often associate to something with flat faces that meet in edges, as is the case for minerals, naturally grown crystals. Nevertheless the crystaline state of a material refers to the internal structure, the totally aligned organization of the atoms. The process by which the Si crystal on the photo is grown does not yield faces, but still, this is a true crystal.
(on the other hand if we cut a piece of glass in form of a hexagonal quarz crystal that will not be a crystal, just shaped glass.)
Although the element silicon is extremely common in natural rocks (all silicates contain it), it is never found in pure state naturally, only in combination with other elements. (most commonly as quartz and feldspar)
text and photo: kakov
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Silicio monocristalino cultivado en un laboratorio, es decir el elemento silicio (Si) en estado completamente pura en una estructura cristalina continua.
Cortado en rodajas este material es la base de la industria electrónica.
■ 도예가 겸 유명 디자이너 ‘조나단 애들러’가 운영하는 매장에 ‘LG 시그니처’ 전시
■ 지난 상반기 프리미엄 고객들이 많이 이용하는 뉴욕 맨하탄 주요 백화점에도 입성
※ Social LG전자 (social.lge.co.kr/newsroom) 에서 관련 보도자료를 확인하실 수 있습니다.
■ 유명 암벽등반가, ‘코드제로 싸이킹’의 흡입력 이용해 약 140m 높이의 빌딩 등반
□ 무선 청소기 가운데 세계 최고 수준의 흡입력 입증
■ 스마트 인버터 모터, 배터리 기술 결합해 유선 청소기 수준의 흡입력 구현
■ LG전자 세탁기사업부장 전시문 전무 “선을 없애 편리한 ‘코드제로’의 강력한 흡입력을 입증한 쾌거”라며 강조
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■ ‘CES 2017’ 공식 어워드서 ‘최고상’과 ‘최고 TV상’ 동시 수상 영예
□ 공식 어워드 파트너 ‘엔가젯’, “TV라기 보다 예술작품”
■ LG전자 HE사업본부장 권봉석 부사장 “이번 수상을 계기로 올레드 TV의 차원이 다른 기술력을 다시 한 번 입증했다”며, “올레드 TV로 전 세계 프리미엄 시장을 지속 선도할 것” 이라고 강조
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Il sistema micro quattro/terzi è interessante ma i prezzi cui si fanno pagare le ottiche sono assolutamente sproporzionati se si paragonano a quelli richiesti per obiettivi FX. C'è poco vetro, molta plastica e nessuna tropicalizzazione appure costano poco meno delle ottiche Pro di Nikon. Un esempio? il 7-14 panasonic costa 1.349 euro mentre il 14-24 (suo equivalente fx) Nikon costa 1.590 euro. Solo che quest'ultimo deve coprire l'area di un sensore che è più del doppio di quella del sensore micro 4/3... e in più è tropicalizzato!
These are pictures documenting the completion of a full upgrade performed on my VGA Synthesizer.
The VGA Synth is an audio video instrument utilizing hybrid analog-digital technologies to hack standard VGA signals to produce a synaesthetic audio video experience. With the aid of an external audio mixer, line-level outputs on the VGA synth are routed to its inputs, creating oscillations through networked feedback loops. These oscillations are translated into sound through the mixer and visuals via custom electronics inside the synth. Additionally, internal oscillators synchronized to the VGA signal are used to generate vertical bands. To provide a bit a variation to the patterns output by the synth, a 3x3 switching matrix with automatic and manual controls is used to reroute signals on one of the three input channels to any combination of the three output channels. The three outputs correspond to the red, green, and blue levels in a VGA video signal. The automatic routing control is derived from the level and frequency of the signals on the input channels.
Originally developed in the Spring of 2007, the VGA Synthesizer features included 3 analog line-level inputs, 3 analog line-level outputs, one 15-pin D-sub VGA input, one 15-pin D-sub VGA output, gain control for the 3 line-level inputs, 3 oscillators synchronized with the video signal's vertical synch pulses, and amplitude controls for the 3 oscillators.
The original chipset included TL084 and TL082 operational amplifiers; CD4040BE, CD4066BE, CD4050BE, and CD40106BE CMOS 4000 series digital logic ICs.
In 2010, the revision eliminated a lot of unstable non-inverting amplifier configurations in favor of an improved system of higher gain inverting amplifiers. Many redundant components were removed; the power supply was simplified and redesigned to produce less line noise; additional manual control over the 3x3 routing matrix was integrated using rotary switches; and the oscillator amplifiers were made independent from the line-level input amplifiers. Finally, the chipset was upgraded from the slow TL series of linear components to the high slew-rate TLC series and the CD4000BE logic was replaced with HEF4000BE.
■ ‘X5’, 5.5인치 대화면에 슬림한 디자인 갖춰
■ ‘X 파워’, 4,100mAh 대용량 배터리에 충전 시간은 그대로
■ 기존 출시한 ‘X 스크린’, ‘X 스킨’, ‘X 캠’ 등 총 5종으로 국내 보급형 시장 공략
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Testing my Legacy Lens Collection.
I thought that Vivitar was a flash manufacturer -I'm a newcomer in photography- but the old lenses of this brand that have been grabbing so far are pretty good.
This was making springs, about one every ten seconds, live on the street. Wire is coming down from a roll on top, and the spring is coming out between the two pulleys. I have heard stories that they used to actually do this in America, about 50 years ago. (In the downtown Seoul electronics market.)
Snapshot from the third issue of my webseries "Bleeping Relics" about the 1978 Handheld "Soccer", manufactured by Mattel Electronics.
Watch the episode here:
www.youtube.com/watch?v=xABfSvcbLwA
Shot with a Pentax K-5
TN9 System
electronics
Solutions for vertical and Horizontal lighting
Possibilità di inserire illuminazione verticale sui lati e orizzontale sotto il piano top
All controls are external. B500k potentiometer in place of the "wave shape" switch. External "gain" control. I also opted for a C100k "rate" control instead of the linear taper. This seems to spread the usable range out nicely.
A schematic diagram for an upcoming project: a crystal set receiver based on the Australian "Mystery Set" designed in 1932 (it's called a "Mystery Set" because the tuner is an incomplete circuit and yet, performs better than a "correctly" designed set). The set will be housed in a wooden box with a lid with lock and key (in the style of an old English crystal set) and a dummy crystal detector for looks only (the actual detector will be a 1N34 type germanium diode). This radio will also have a band switch for longwave, medium wave (standard AM broadcast), and shortwave. Note the use of inductors in series and parallel combinations, and the use of a second detector diode for the signal strength meter. See www.flickr.com/photos/14275763@N08/24133301200/ for photo of some of the parts.
Note: To cover the European LW broadcast band, use 230 turns on L2.
If using this image please attribute to "Kitmondo TAM" - www.kitmondo.com/test-and-measurement-equipment
Images from listings on our website Kitmondo.com in the Test and Measurement section. See a range of Test and Measure equipment from across the globe on our site.
The "Wheelwriter" 1984. One of the last models before the computer/word processor took over. The old Speakers Office in Old Parliament House
The Collins KWM-2 is a high quality amateur band transceiver featuring CW, LSB and USB modes. Frequency ranges: 3.4-3.6, 3.6-3.8, 3.8-4, 7-7.2, 7.2-7.4, 14-14.2, 14.2-14.4, 14.8-15, 21-21.2, 21.2-21.4, 21.4-21.6 and 28.5-28.7 MHz plus 23 additional 200 kHz positions for 28-29.7 MHz. Power input is 175 watts PEP on SSB, 160 watts on CW. Power output is 100 watts PEP nominal (slightly lower on 10 meters).