.'.' .- 4,'' .Ii :, Ir , ..I,iiI l

" 9- ".

.- .q.U

.,-,-

loi.1%w-l-, I

w:., ::" 77777-

-} -01

,,I'll ..1111. ." ..-

b-Zt

tillillililloh- ---wommmmol.

womm- -

Somethings are changing forthe better.Many people know us as an instrumentmanufacturer. we make more than 2,000products for measurement, test and analysis.Others know us as a computer company: morethan 10,000 own our programmable calcu-lators and computers. We prefer to think thatour business is to serve measurement, analysisand computation needs . .in science,industry, medicine and education. This is therationale behind every new instrument,computer or system that we tell you aboutin these ads. This month:

A sensor-based systemthat makes real sense.

There's a growing demand in industry and researchlaboratories for sensor-based computer systems thathandle great quantities of analog and digital information.Systems built from programmable instruments usuallyare too expensive; people pay for equipment featuresthat they don't need. Yet the alternative has been apiecemeal approach - break down the customer'sproblem into several parts and use separate "mini-systems" to solve each part independently.

Now there's a third choice - Hewlett-Packard's newfamily of compact data acquisition and control systemsfor cost-effective automation in industry and research.A 9600 Series system monitors, collects, andprocesses information from sensor-based sources. Itthen can generate reports, control power supplies, alertoperators, drive graphic displays and plotters, and

a.~,produce control signals for closed loop operations.Although you can't be everywhere at once - super-vising and trouble-shooting - our system can.

Two new subsystems within the 9600, one analogand one digital, now do the things a number ofprogrammable instruments used to do. These instrument

____________ :functions are contained on plug-in cards. Instead ofadding individual instruments, you merely slip in aninexpensive printed cirucuit board.

The 9600 data acquisition systems are modular.....Start with a minimum low-cost system to control a single

test or experiment, and expand with your growing needs.The full story on the 9600 System family is

yours for the asking.

Nothing can outperform this newdigital GC-even at twice the price.

When the HP 9600 rolls through your door, Because the gas chromatograph (GC) is essentiallyyour real-time and data acquisition tasks a tool for qualitative and quantitative chemical analysis,become a lot easier to perform. This new its value ultimately depends on how well it does thissystems family's long suit is the efficient and job. Over the years, many new models have beeneconomic handling of multitudes of analog i tand digital information, simultaneously. introduced that perform more accurately than previous

This would be an unusual case - using abattery-powered counter to check out the

frequency of a mountain rescue-team's radioequipment - but it illustrates that HP'sportable instruments can go anywhere

service is needed.

instruments - at a price. The truly amazing thing aboutthe new HP 5700 GC is this: it produces more accurateand precise retention time (qualitative) and peak area(quantitative) data than any GC ever built. Yet itcosts about half as much as top-of-the-line GCs ofcomparable quality.

A new bulletin on the 5700 fully documents this per-haps startling claim. Until you have a chance to studythis data consider this: one of the first 5700s off theproduction line was used "as is" to make two series ofreplicate analytical runs, one series before and oneafter an overnight shutdown. The sample used in bothseries contained seven components, out to C17.

The results speak for themselves. In terms of repeataccuracy, the mean retention time of each of the sevencomponents differed less than 0.01 minute after theovernight shutdown; the normalized area % varied onlywithin +0.001%. In terms of precision, the standarddeviations of the replicate retention time measurementsfell within 0.0175, both before and after the overnightshutdown; the standard deviations of the area % datawere all within 0.0038. No other GC, regardless ofprice, can do better.

For a fully documented proof of performance as wellas a factual description of this new all-digital, computer-compatible automatic GC, write for Bulletin 5700.

Portable Instrumentsgowhere the problem Is.

Capital equipment such as mobile or remote communi-cations systems and million dollar computers have atleast two things in common. They are electronicallycomplex, and they can't be taken into a service centerwhen they need repair. Today's traveling field serviceengineer must have laboratory quality equipmentthat will go where he goes.

HP's portable instruments enable service engineersto diagnose and repair this equipment on the spot,reducing expensive downtime. Our portable scopes aresmall enough to fit under an airliner seat, and, at 24pounds, are light enough to be carried up antennamasts and into other hard-to-reach places. An HPelectronic counter can be held in one hand - it takesonly seconds to snap on a function module that providesthe specific measuring capability needed. Then there'sour multi-function meter -a high performance, instant-reading voltmeter and ohmmeter rolled into one.

And the length of HP's portable measuring capabilityisn't limited by the distance to the nearest wall socket.Most of our portable instruments feature their ownaccessory battery pack. Many can run off ordinary car,plane or boat batteries as well as a standard power line.And all of them deliver HP precision in a rugged,portable package.

Ask for the full story on portable instruments thatgo where the problem is. Write Hewlett-Packard, 1507Page Mill Road, Palo Alto, California 94304; Europe:1217 Meyrin-Geneva, Switzerland.

00202

HEWLETT ihp, PACKARD

We want to be useful...and even interesting

Doing anything July 10th?Those for whom a total solar eclipse makes a day very im-portant professionally have quite definite plans already forJuly 10, 1972 and quite definite opinions on what's worthdoing that day. The path of totality being what it is throughthe oft-clouded skies of Alaska, the Northwest Territories,Quebec, and the Maritimes, mere enthusiasts may find them-selves luckier. We are told that an opportunity presents itself

to confirm photographically the existence of comets or, con-ceivably, other small celestial objects much nearer the sunthan Mercury. We are also told that it will take lots of luckindeed, and lots of coolness, patience, and focal length.

If interested and if there is still time, send to Dept. 916, Kodak,Rochester, N. Y. 14650 for "How to Enjoy the Eclipse."

Spontaneity through information densiWe hope that you (or at least yourfamily) have learned in recent weeks ofKodak's pocket principle in photogra-phy: film only 16mm wide in a one-inch-thick cameraleads to high-grade3½1/2"x4/2" snap-shots, 5"x 7" en-largements, or afine slide show ofunusual spontane-ity in expressionand behavior.

This principle rests on a bewilderinginterlace of more basic principles in en-gineering, chemistry, economics, andbusiness law. Most basic of all is thelimit on information density set bychemical technology. To suggest thatthe limit has now been even approachedwould be self-serving pessimism. Aphysicist among us gives guidance onwhat improvements would be notice-able.Author of a doctoral thesis on fourth

sound in Hell, he finds that translatingspatial frequency concepts into migra-

tion behavior of chemical entities in aphotographic color emulsion adequate-ly utilizes his professional capabilities.The photographic chemists he coun-

sels think like chemists. To deal withthe photographic image in terms of

Fourier analysis is the way of a com-munications engineer. The physicistbreaks down a photograph into severalmillion data points and processes thedata to enhance some spatial frequen-cies.

See, for example, how an electron micrograph of a cell nucleus can bethus processed to accentuate the spatial frequencies of the mitochondria:

-~~~W 'IVf ^r.

BEFORE AFTER

Takes too much computer time for routine use. Feasible when a studythat correlates subjective judgments of sharpness with patterns of spatialfrequency enhancement can be supported by millions of camera-buyingspontaneity-seekers.

Micropublishing takes great leap forwaattache cases to lightenFor delivery soon after October 1, 1972,we now ofier a $95 microfiche reader. Tobook order, find Kodak in the YellowPages under "Microfilming."

It weighs less than five pounds. Its12V lamp-autodome type-needs nofan. Soundless. Smart optical design,for a bright, contrasty front-projectedimage. A minor purchase for the homeor office, costing less than a comfort-able chair to put in front of it.

If publishers and learned societiescan sell the idea that ink is not the vitalingredient in disseminating specializedinformation and according recognitionto authors, prospects for economic via-bility may brighten. Now it should bePrice subject to change without notice.

easier to sell that idea.The KODAK EKTALITE 120 Reader

can be used like this:A F EA W :I

The limits of photography recede

I II