Popular brand of copy paper in Australia, but widely disparaged for it's manufacturer's reputation for using rainforest timber.

Reflex is the name of a color that was used on a special edition VW Beetle. This color was only available during the 2000 model year. The color was an orangey yellow that looked impossibly bright in the sunshine. The kicker with this color was that you could only get it if you ordered your Beetle via the Volkswagen website. The other limited edition color for 2000 was called Vapor.

There are several reflexes that infants exhibit at birth. Some remain for the rest of your life, some disappear at the end of the neonatal period or shortly thereafter. Here is a list of some interesting ones:

Moro Reflex
Palmar Grasp
Eye Blink
Withdrawal
Rooting
Sucking
Swimming
Tonic Neck
Stepping
Babinski Reflex

(Have patience with me, I know most of these links don't work. I'm working on it)

The reflex was an interesting radio receiver circuit that had a certain vogue amongst constructors of the 1920s and 1930s, until the advent of more efficient vacuum tubes. It enabled the builder to make at least one amplifier tube do double-duty, thus saving on tube count. That's the theory, anyway – in practice, the circuit could be a bit tricky.

Simply put, in a reflex circuit, a tube would be made to amplify not only radio frequencies, but audio frequencies as well. This was accomplished by feeding the audio output of the detector tube back through one of the radio-frequency amplifier tubes. In a superheterodyne arrangement, the audio might be amplified instead by one of the intermediate-frequency tubes. Since the two frequencies were vastly separated in value (one being in the supersonic range, the other in the audible range), and the tube was operated as an amplifier and not a mixer, there was little chance of interference between the two.

At the output of the reflexed tube, radio frequencies went on to the detector, and audio to the power output amplifier tube and loudspeaker. The circuit worked reasonably well, as long as everything stayed in adjustment, which usually required a skilled operator. Given, though, the peculiarities of early tubes and components, the circuit was subject to instability and oscillating, resulting in the circuit doing a poor job of its tasks. In later years, some manufacturers managed to produce moderately stable commercial reflex receivers; but as tubes (and circuits) got better, and cheaper, the circuit fell into disuse.

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Re"flex (r?"fl?ks), a. [L. reflexus, p. p. of reflectere: cf. F. r'eflexe. See Reflect.]

1.

Directed back; attended by reflection; retroactive; introspective.

The reflex act of the soul, or the turning of the intellectual eye inward upon its own actions. Sir M. Hale.

2.

Produced in reaction, in resistance, or in return.

3. Physiol.

Of, pertaining to, or produced by, stimulus or excitation without the necessary intervention of consciousness.

Reflex action Physiol., any action performed involuntarily in consequence of an impulse or impression transmitted along afferent nerves to a nerve center, from which it is reflected to an efferent nerve, and so calls into action certain muscles, organs, or cells. -- Reflex nerve Physiol., an excito-motory nerve. See Exito-motory.

 

© Webster 1913.

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Re"flex (r?"fl?ks; formerly r?*fl?ks"), n. [L. reflexus a bending back. See Reflect.]

1.

Reflection; the light reflected from an illuminated surface to one in shade.

Yon gray is not the morning's eye, 'Tis but the pale reflex of Cynthia's brow. Shak.

On the depths of death there swims The reflex of a human face. Tennyson.

2. Physiol.

An involuntary movement produced by reflex action.

Patellar reflex. See Knee jerk, under Knee.

 

© Webster 1913.

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Re*flex" (r?*fl?ks"), v. t. [L. reflexus, p. p. of reflectere. See Reflect.]

1.

To reflect.

[Obs.]

Shak.

2.

To bend back; to turn back.

J. Gregory.

 

© Webster 1913.