He constructed one form of his coherer of a glass tube a few inches long filled with iron borings or brass filings, having contact plates or pins at the end.
1) utilizes the increased pressure in the open mouth of a straight tube facing the wind, and the decrease of pressure caused inside when the wind blows over a ring of small holes drilled through the metal of a vertical tube which is closed at the upper end.
In the next experiment the air was compressed as before, and then allowed to escape through a long lead tube immersed in the water of a calorimeter, and finally collected in a bell jar.
He sealed his skin around the tube, forced the flow downward, and placed his hands on her, forcing her body to accept his blood.
He gently removed the tube from the Oracle and placed his hand over the wound to heal it.
At her inquiry, the doctor said the air tube had not caused any physical damage to Alex's vocal cords.
Damian shoved the other end of the tube into his neck, releasing his power.
His attention was distracted momentarily as the feeding tube was switched to Carmen's other breast.
The top slid open to reveal a tire patch kit containing two small patches and a tube of sealing adhesive.
He retrieved a jar from the small refrigerator and laid it next to a surgical knife, a large rubber tube, and a huge syringe.
Lind's anemometer, which consists simply of a U tube containing liquid with one end bent into a horizontal direction to face the wind, is perhaps the original form from which the tube class of instrument has sprung.
He discovered a fact subsequently rediscovered by others, that a tube of metallic filings, loosely packed, was sensitive to electric sparks made in its vicinity, its electrical resistance being reduced, and he was able to detect effects on such a tube connected to a battery and telephone at a distance of 500 yds.'
Damian launched forward, snatching the tube and whipping out a knife.
The tube is then exhausted of its air, and attached to a bone or glass rod as a holder.
Alex straightened the feeding tube across her shoulder and watched anxiously as Matthew mouthed the nipple and feeding tube.
A tube ran from her neck to the vat of blood on the floor.
If the wind blows into the mouth of a tube it causes an increase of pressure inside and also of course an equal increase in all closed vessels with which the mouth is in airtight communication.
Approximately II% should be added to the velocity recorded by a tube anemometer for each 1000 ft.
To test this two vessels similar to that used in the last experiment were placed in the same calorimeter and connected by a tube with a stop-cock.
In Rhabdopleura each zooid forms its own delicate tube composed of a characteristic series of distinct rings.
All the essential parts of the micrometer, including the slides, micrometer box, tube, etc., are of steel or cast-iron, so that changes of temperature do not affect the adjustments.
This mixture burns with a green flame forming boron trioxide; whilst boron is deposited on passing the gas mixture through a hot tube, or on depressing a cold surface in the gas flame.
Boron chloride BC1 3 results when amorphous boron is heated in chlorine gas, or more readily, on passing a stream of chlorine over a heated mixture of boron trioxide and charcoal, the volatile product being condensed in a tube surrounded by a freezing mixture.
By passing the vapour of this compound through a red-hot tube, it yields the isomeric a0- pyridylpyrrol, the potassium salt of which with methyl iodide gives a substance methylated both in the pyridine and pyrrol nuclei.
The great advantage of the tube anemometer lies in the fact that the exposed part can be mounted on a high pole, and requires no oiling or attention for years; and the registering part can be placed in any convenient position, no matter how far from the external part.
In the undulator apparatus, which is similar in general principle to the " siphon recorder " used in submarine telegraphy, a spring or falling weight moves a paper strip beneath one end of a fine silver tube, the other end of which dips into a vessel containing ink.
A fine glass siphon tube is suspended with freedom to move in only one degree, and is connected with the signal-coil and moves with it.
The ink is electrified by a small induction electrical machine E placed on the top of the instrument; this causes it to fall in very minute drops from the open end of the siphon tube upon the brass table or the paper slip passing over it.
When such a tube is inserted in series with a single voltaic cell and galvanometer it is found that the resistance of the tube is nearly infinite, provided the filings are not too tightly squeezed.
On creating an electric spark or wave in the neighbourhood of the tube the resistance suddenly falls to a few ohms and the cell sends a current through it.
In 1894 he exhibited apparatus of this kind in which the tapping back of the tube of filings was effected automatically.
By shaking or tapping the tube the original high resistance is restored.
But, as Branly showed, it is not universally true that the action of an electric wave is to reduce the resistance of a tube of powdered metal or cause the particles to cohere.
The short leg of the siphon tube dips into an insulated ink-bottle, so' that the ink it contains becomes electrified, while the long leg has its open end at a very small distance from a brass table, placed with its surface parallel to the plane in which the mouth of the leg moves, and over which a slip of paper may be passed at a uniform rate, as in the spark recorder.
The eyepiece slides into the tube cd, which screws into the brass ring ef, through two openings in which the oblong frame, containing the micrometer slides, passes.
Between 1500 and 4000 metres the charge inside the unit tube is much less, only 0.000040.