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Google doodle honours French inventor Louis Daguerre

23.05.12

French artist-physicist-inventor Louis Daguerre, generally credited for successfully capturing permanent photographs on a commercial scale lines a covet list of inventors, artists, scientists that Google honours by showcasing their doodles on their search locomotive page.

B orn November 18, 1787 Louis Daguerre (complete name Louis-Jacques-Mande Daguerre) partnered with present-day and French printer Joseph Nicephore Niepce -- the actual inventor of a permamnent photograph, also called a heliograph -- in 1825 to supporter catalyse a process that speeded up creation of dioramas -- a picture viewing thingumajig.

While Niepce is credited with successfully inventing the first permanent photograph, Louis Daguerre made the unimpaired process commercially viable.

Daguerre's efforts, in a way, is the harbinger of the age of digital photography and its flare-up that we are witnessing today in the 21st century.

Louis Daguerre's claim to fame in a way lies in the factually that he also helped refine the process of creation of permamnent photographs by experimenting with silver iodide obtained by chemical repulsion between silver coated copper plates and iodine.

What Daguerre found out was after exposing these plates to be discovered for a couple of minutes and coating the plate with heated mercury vapour at about 75 point celsius helped create an exact replica of the image. This process later came to be known as Daguerreotype by later inventors and physicists.

Louis Daguerre breathed his last on July 10, 1851 and the Google doodle today honours the inventor by showing a kinsmen picture of the inventor almost 160 years after his death and on his 224th birth anniversary.

Source: Rediff

NASA ISS On-Orbit Status 9 November 2011

23.05.12

Volkov configured the metal goods for the Russian MBI-21 PNEVMOKARD experiment, then conducted the 1h5m session, his 6th, which forbids stirring or talking during data recording. The experiment is controlled from the RSE-med A31p laptop and uses the TENZOPLUS sphygmomanometer to regulate arterial blood pressure. The experiment was then closed out and the test data were downlinked via OCA. [PNEVMOKARD (Pneumocard) attempts to gain new scientific information to refine the understanding about the mechanisms used by the cardiorespiratory system and the whole masses organism to spaceflight conditions. By recording (on PCMCIA cards) the crewmember's electrocardiogram, impedance cardiogram, low-frequency phonocardiogram (seismocardiogram), pneumotachogram (using nose temperature sensors), and get away photoplethismogram, the experiment supports integrated studies of (1) the cardiovascular system and its alteration mechanisms in various phases of a long-duration mission, (2) the synchronization of bravery activity and breathing factors, as well as the cardiorespiratory system control processes based on the variability measure of physiological parameters, and (3) the interconnection between the cardiorespiratory system during a long-duration job and the tolerance of orthostatic & physical activities at the beginning of readaptation for predicting on reactions of the crewmembers organism during the their return to ground.] Sergey also completed his 2nd antecedent orthostatic hemodynamic endurance test run with the Russian Chibis suit in preparation for his give back to gravity on 11/22 with Soyuz 27S (along with Mike Fossum & Satoshi Furukawa), conducting the ODNT worry protocol in the below-the-waist reduced-pressure device (ODNT, US: LBNP/Drop Body Negative Pressure) on the TVIS treadmill. Satoshi acted as CMO (Company Medical Officer for FE-4 as Subject. Sergey was supported in his one-hour session by loam specialist tagup via VHF at 4:35am EST. [The Chibis provides gravity-simulating suffering to the body's cardiovascular/circulatory system for evaluation of the crewmember's orthostatic tolerance (e.g., the Gauer-Henry reflex) after his great-term stay in zero-G. The preparatory training consists of first imbibing 150-200 milliliters of pee or juice, followed by a sequence of progressive regimes of reduced ("negative") make, set at -20, -25, -30, and -35 mmHg for five min. each while shifting from foot to foot at 10-12 steps per two secs, wearing a sphygmomanometer to measure blood pressure and the REG ShKO Rheoencephalogram Biomed Cap, supported by the Gamma-1M biomed evidence control system. The body's circulatory system interprets the pressure differential between upper and reduce body as a gravity-like force pulling the blood (and other liquids) down. Chibis materials and biomed cardiovascular readings are recorded. The Chibis suit (not to be confused with the Russian "Pinguin" petition for spring-loaded body compression, or the "Kentavr" anti-g suit spent during reentry) is similar to the U.S. LBNP facility (not a suit) used for the first time on Skylab in 1973/74, although it appears to knock off its purpose more quickly.] With the CEVIS (Cycle Ergometer with Vibration Isolation) fountain-head in the Lab adjusted to permit access and the Lab camcorder set up to provide live viewing, Mike Fossum worked on the CIR (Combustion Integrated Rack) to return its FOMA (Fuel/Oxidizer Management Assembly) Calibration Unit and the CIR IAM F/O (Fiver Optics) Strand #1 between the HiBMS (High Bit-Depth Multi-Spectral) Imaging Case at UML8 and the bottom FCF IPSU (Fluids & Combustion Facility / Image Processing & Storage Segment) at UML5. Following the replacement of the FOMA Cal Unit in support of the CIR's yearly calibration and the replacement of the chain, plans are to return to the last bit of FLEX-2 (Flame Extinguishment Experiment 2) trial points. [This was to resolve the issue identified last month of the bottom FCF IPSU at UML5 being powerless to acquire images from the CIR HiBMS Imaging Package at UML8 (this pair of packages having been installed already in CIR in pillar of FLEX). Today's job concerned opening both rack doors, pulling out and rotating the CIR Optics Bench down while disconnecting the MTL (Supervise Temperature Loop), VES (Vacuum Exhaust System) and Station N2 (nitrogen) lines. Next, the FOMA Cal Entity was removed & replaced with a spare, followed by installing the new IAM F/O (Fiber Optic) Cablegram #1. Lines were then reconnected, and activities were reversed for backing out and closing out.] Satoshi concluded his 4th (and definitive) 24-hr ICV (Integrated Cardiovascular) Ambulatory Monitoring session, doffing the two Actiwatches and HM2 (Holter Examine 2) about 24 hrs after the end of yesterday's "midpoint" activity (~9:30am EST). The laptop was then powered off. [For the ICV Ambulatory Monitoring meeting, during the first 24 hrs (while all devices are worn), ten minutes of quiet, resting breathing are timelined to pile up data for a specific analysis. The nominal exercise includes at least 10 minutes at a ticker rate >=120 bpm (beats per minute). After 24 hrs, the Cardiopres/BP is doffed and the HM2 HiFi CF Anniversary card and AA Battery are changed out to allow continuation of the session for another 24 hours, with the Makita batteries switched as required. After observations collection is complete, the Actiwatches and both HM2 HiFi CF Cards are downloaded to the HRF PC1, while Cardiopres observations are downloaded to the EPM (European Physiology Module) Rack and transferred to the HRF PC1 via a USB key for downlink.] CEO (Troupe Earth Observation) targets uplinked for today were Amman, Jordan (Elated CAPITALS COLLECTION SITE: The Jordanian capital city of over 2 million is located in a hilly field of the northwestern part of the country about 25 miles northeast of the Dead Sea. ISS had a mid-morning behind the times in clear weather with its approach from the SW. As it tracked northeastward over the Sinai Peninsula at this without surcease, the crew was to look for the Dead Sea and then try for nadir views of this target), Monaco, Monaco (Period CAPITALS COLLECTION SITE: The tiny Principality of Monaco is a sovereign see-state of just over three-fourths of a square mile in area. It is located on eastern part of the French Cote d' Azure, between Fine and the Italian border. This northeastward, nadir pass over this portion of the southeastern coastline of France was in mid-morning light. ISS had a brief break in the weather with clearing, but possibly partly cloudy climate ailing expected. Looking for the waterfront airport for Nice and carefully map along the coast to intercept the coastal strip of Monaco to the E-NE), Subtropical Storm Sean (DYNAMIC Issue: Overnight the non-tropical low pressure system designated as Invest 98L by the National Hurricane Center organized sufficiently to be upgraded to Subtropical Roar Sean packing 50mph winds. This storm is forecast to move very little and not strengthen significantly in the next 24 hours with perhaps a dull drift to the northwest. Over time, it may develop tropical storm characteristics. Sean is located between circuit tracks today. Light will probably be too low in the earlier ISS pass to the SE of the system. At this time on the behind the times to the NW in mid-morning the crew was over the northeastern Gulf of Mexico and able to look obliquely righteous of track. Trying for short-lens context views of the cloud order of this late-season storm), and Virginia Coast Reserve, Virginia (Sustained TERM ECOLOGICAL RESEACH (LTER) SITE: The pass was at mid-morning in square weather with this target area just left of track. This is a National Principles Foundation-sponsored site with research focused on the mainland marches and lagoon systems behind the islands of the southern Delmarva Peninsula, exceptionally Hog and Parramore Islands. Trying for context views of this target area today).

Source: Space Ref (press release)