at regular intervals

at regular intervals

At an equal distance apart. Make sure to position those Christmas lights so that the flashing ones appear at regular intervals.
See also: interval, regular

at regular intervals

[of things in a series] at points that are equally distant from each other. You will find service stations at regular intervals along the highway. There are street lights at regular intervals on the main street of town.
See also: interval, regular
References in classic literature ?
Fruits of various; kinds were likewise suspended in leafen baskets, from the tops of poles planted uprightly, and at regular intervals, along the lower terraces of both altars.
The train, jerking at regular intervals at the junctions of the rails, rolled by the platform, past a stone wall, a signal-box, past other trains; the wheels, moving more smoothly and evenly, resounded with a slight clang on the rails.
Rifles ranked so close even to that mountain path that a cry from him would bring the soldiers rushing up the hill, to say nothing of the fact that the wood and ridge were patrolled at regular intervals; rifles so far away, in the dim woods, dwarfed by distance, beyond the river, that an enemy could not slink into the town by any detour.
They were surrounded by men, women, and children, who sang a kind of lugubrious psalm, interrupted at regular intervals by the tambourines and cymbals; while behind them was drawn a car with large wheels, the spokes of which represented serpents entwined with each other.
Many-hued decanters of liquor perched at regular intervals on the lower shelves.
At regular intervals down the long sides of the room, at right angles with the wall, were iron slabs, grooved like meat-dishes; and on each lay a body.
Twice, at regular intervals, he repeated the call, standing in attentive silence for several minutes after the echoes of the third call had died away.
Day after day the boats lowered and were swallowed up almost ere they touched the water, while we on board pumped the horn at regular intervals and every fifteen minutes fired the bomb gun.
It was mid-forenoon when the two at last entered one of the roads that cut through the cultivated districts at regular intervals, joining the arid wastes on either side with the great, white, central highway that follows through the centre from end to end of the far-reaching, threadlike farm lands.
When we approached these points a warrior would be sent far ahead with a powerful field glass, and if no great body of red Martian troops was in sight we would advance as close as possible without chance of being seen and then camp until dark, when we would slowly approach the cultivated tract, and, locating one of the numerous, broad highways which cross these areas at regular intervals, creep silently and stealthily across to the arid lands upon the other side.
At regular intervals great gates give entrance to the city; but even at the distance from which we looked upon the massive pile we could see that all were closed, and, in accordance with Talu's suggestion, we deferred attempting to enter the city until the following morning.
In our diagram the line of succession is broken at regular intervals by small numbered letters marking the successive forms which have become sufficiently distinct to be recorded as varieties.
On the beach, at regular intervals, planks were placed as obstacles.
The house is there in all weathers, and the house, as she expresses it, "is what she looks at." She sits in her room (in a side passage on the ground floor, with an arched window commanding a smooth quadrangle, adorned at regular intervals with smooth round trees and smooth round blocks of stone, as if the trees were going to play at bowls with the stones), and the whole house reposes on her mind.