What Is The Law Of Undulation?

What Is The Law Of Undulation
The Law of Undulation: a Concept by C.S. Lewis In 1942, C.S. Lewis published The Screwtape Letters, The story is written as a series of letters from a senior demon, Uncle Screwtape, to a junior demon (his nephew), Wormwood. Each letter is advice on securing a man’s soul and covers many different aspects of life.

Because it is written in from a demon’s perspective, Christians have to get used to the unique dialogue and characters, such as “the patient” (a man), “our father below” (the devil), and “the Enemy” (God).
While the whole book is well worth reading, here I will focus on one particular concept in chapters 8 and 9, the Law of Undulation.

The Law of Undulation is explained as the peaks and troughs humanity experiences in every area of our lives, such as our work, friends and, most importantly, our relationship with God. Peak times are characterized by feelings of richness and liveliness, where everything is new and exciting.

Troughs are full of numbness and poverty.
Humans are by nature unstable and, according to Lewis, this roller coaster of feelings is the “nearest approach to constancy” that we will ever have.
Specifically, Lewis talks about the difference between our initial Christian experience vs.
Our ongoing spiritual lives.

Uncle Screwtape states that God initially sets us “off with communications of His presence which, though faint, seem great to them, with emotional sweetness, and easy conquest over temptation.” Later, however, our spiritual life changes as we begin experience difficulties.

Screwtape says that God “withdraws, if not in fact, at least from their conscious experience, all those supports and incentives.
He leaves the creature to stand up on its own legs—to carry out from the will alone duties which have lost all relish.” In short, we begin our Christian life in the “honeymoon phase.” Our first love for God is all-encompassing and seems that it will carry us through to eternity.

Later, however, it seems that God is nowhere to be found and we must keep being Christian regardless of our feelings. It is during these emotional troughs that Satan frequently attacks. He attacks our body, usually with lust and sexual temptation, where we take the pleasures “which God has produced, at times, or in ways, or in degrees, which He has forbidden.” And he attacks our mind, “making us doubt whether the first days of Christianity were not, perhaps, a little excessive.” I think it is safe to say that every Christian experiences this undulation.

In my early walk with Christ, I remember praying for God to prove his existence by getting me a Toyota hippie van (no comments please).
A few weeks later, I found one for $100 (true story).
I remember feeling God’s presence in every area of my life, as if completely surrounded by his love at all times.

Many of my friends were using terms like “Ned Flanders” or “Bible thumper” to explain me, I was proud of it. I was even honored to be cleaning church toilets — for Jesus! Now, it is fifteen years later. I have made many decisions of faith that have steered my life this way and that, and I have reaped the benefits of many of those good decisions.

Yet no matter how much God has done for me, I still doubt Him on occasion. Sometimes, I can’t even remember why I am doing basic things like writing testimonies or doing daily devotionals. It is at these times when acts which used to bring me joy lose their fervor, and I am left wanting, sad, and alone.

My adventure through getting a doctorate has been especially trying at times. Last semester, I was studying for the last, and most difficult, exam of my last semester. For the first time since I became a Christian, I doubted God’s presence. Sure, I often feel as though God is gone, but I still know He is there.

But this time I actually thought He was not with me anymore.
I began to think my WHOLE grad school experience was me walking out on a limb without His holy presence protecting me.
This was the most frightened I have been since I became a Christian.
So what are we supposed to do about this? How can we manage this fundamental tension? We are human, so we have extreme highs and lows.

And we are Christian, so we must serve God regardless of how we are thinking or feeling at the time. In The Screwtape Letters, Lewis offers a few hints that I find helpful about how to endure the troughs. First of all, we need to know WHY God is letting this happen to us.

Screwtape tells his nephew, “Do not be deceived, Wormwood. Our cause is never more in danger, than when a human, no longer desiring, but intending, to do our Enemy’s will, looks round upon a universe from which every trace of Him seems to have vanished, and asks why he has been forsaken, and still obeys.” This means that God is training us to be more like Christ at these times.

He allows us to understand something of what it felt like when He was alone on the cross, so that we can grow up in our spiritual lives. Our fear and feelings are not unvarnished reality. And God has a plan behind all of it. This reminds me of Joseph, who didn’t understand why he was a slave or prisoner.

And Job, whose whole life was taken away. And the Apostle Paul, who was beaten, jailed, and shipwrecked. Each one of these men were trained through these hard times and made much greater than they would have been. Second, we need to seek help from those who understand our condition. Screwtape recommends his nephew to keep his patient out of the way of experienced Christians who will offer up passages that will help him in his hour of need.

Verses like Matthew 11:28-29 or Exodus 14:13-14 give us hope when we are most vulnerable. Christians who are not accustomed to troughs need to find someone they can talk to and seek help from. Knowing that we will surely experience this Law of Undulation, we can use our peak times to prepare for the troughs.

We all need to come together as the Body of Christ and reach out for help or offer help to those in need.
What about you? Have you experienced this Law? Is there a particular Bible verse or passage that has helped you in times of fear or doubt? Have you been helped out of a trough by a brother or sister in Christ? : The Law of Undulation: a Concept by C.S.

Lewis

What is the Law of undulations?

Undulation is a wavelike motion; a gentle rising and falling in the manner of waves, motion, and movement. It is a natural event that involves a change in the position or location of something. This is a manifestation in human life being a natural law.

What is a undulation meaning?

1 a : a rising and falling in waves b : a wavelike motion to and fro in a fluid or elastic medium propagated continuously among its particles but with little or no permanent translation of the particles in the direction of the propagation : vibration 2 : the pulsation caused by the vibrating together of two tones not quite in unison 3 : a wavy appearance, outline, or form : waviness

What is an example of undulation?

Undulate means to move in a wave-like pattern. If a sound increases and decreases in pitch or volume like waves, you can say the sound is undulating, When searching for the lost boy, the rescuers’ cries undulated through the forest. The verb undulate comes from the Latin word undula, which means “wavelet” ( unda means “wave”).

verb move in a wavy pattern or with a rising and falling motion “The curtains undulated ” synonyms: flap, roll, wave see more see less types: luff flap when the wind is blowing equally on both sides type of: move move so as to change position, perform a nontranslational motion verb stir up (water) so as to form ripples verb increase and decrease in volume or pitch, as if in waves “The singer’s voice undulated ” see more see less type of: change undergo a change; become different in essence; losing one’s or its original nature verb occur in soft rounded shapes adjective having a wavy margin and rippled surface Synonyms: smooth of the margin of a leaf shape; not broken up into teeth

What is undulation movement?

Undulatory locomotion is the type of motion characterized by wave-like movement patterns that act to propel an animal forward. Examples of this type of gait include crawling in snakes, or swimming in the lamprey.

What is another word for undulations?

How does the verb undulate differ from other similar words? Some common synonyms of undulate are fluctuate, oscillate, sway, swing, vibrate, and waver, While all these words mean “to move from one direction to its opposite,” undulate suggests a gentle wavelike motion.

An undulating sea of grass When is fluctuate a more appropriate choice than undulate ? While in some cases nearly identical to undulate, fluctuate suggests constant irregular changes of level, intensity, or value. fluctuating interest rates Where would oscillate be a reasonable alternative to undulate ? The words oscillate and undulate can be used in similar contexts, but oscillate stresses a usually regular alternation of direction.

When can sway be used instead of undulate ? While the synonyms sway and undulate are close in meaning, sway implies a slow swinging or teetering movement. trees swaying in the breeze When might swing be a better fit than undulate ? Although the words swing and undulate have much in common, swing implies a movement of something attached at one end or one side.

The door suddenly swung open When would vibrate be a good substitute for undulate ? The meanings of vibrate and undulate largely overlap; however, vibrate suggests the rapid oscillation of an elastic body under stress or impact.
The vibrating strings of a piano When is it sensible to use waver instead of undulate ? In some situations, the words waver and undulate are roughly equivalent.

However, waver stresses irregular motion suggestive of reeling or tottering. the exhausted runner wavered before collapsing

Where does undulate come from?

Etymology. Borrowed from Late Latin undulātus (‘undulated’), from an unattested *undula (‘small wave’), diminutive of Latin unda (‘wave’).

What is the opposite of undulate?

calm	laze
lie still	remain
hold	balance
stabilitate	straighten
composure

How do you use undulation in a sentence?

This plain region comprises the uplands, undulation along ridges and depressions. East of the town, undulations of the prairie rise often ten feet above the adjoining hollows. The site shows undulations indicative of ridge and furrow cultivation.

What is difference between undulation and oscillation?

1.1 Swimming styles – The biology is evidently rich with complexity, encompassing a vast range of body morphologies and swimming styles. A primary sorting can be made on the basis of Reynolds number. When viscous forces dominate, as they do for micro-organisms such as bacteria, propulsion requires non-reciprocal motion that breaks symmetry as a consequence of the linearity of the governing equations.

Very small fish, with lengths of a millimetre or so, also live in this world.
However, for somewhat larger fish, say of length 10 mm, swimming at one body length per second, the Reynolds number will exceed 100, and reciprocal motions become the dominant form of propulsion.
For such organisms, we can identify four major types of swimmers: undulatory, oscillatory, pulsatile and drag-based, as illustrated in figure 1,

Undulatory swimmers are animals that generate a travelling wave along their body or propulsive fins to push fluid backwards. Examples include eels, lampreys and some rays. Oscillatory swimmers, such as salmon, tuna, dolphins and sharks, propel themselves primarily using a semi-rigid caudal fin or fluke that is oscillated periodically.

Animals that periodically ingest a volume of water and then discharge it impulsively to produce thrust by reaction are called pulsatile swimmers, and examples include jellyfish, squid, frogfish and some molluscs (Fish Reference Fish 1987 ; Dabiri Reference Dabiri 2009 ). Finally, drag-based swimmers such as humans, turtles, seals and ducks propel a bluff body such as a rigid flipper through the water to generate thrust (Fish Reference Fish 1996 ).

Our principal consideration here will be undulatory and oscillatory swimmers that use body and/or caudal fin locomotion. In the conventional view, anguilliform swimmers such as eels and lampreys pass a travelling wave of increasing amplitude along the whole body, whereas for thunniform swimmers such as tuna and mackerel the anterior part of the body is held to be relatively stiff, and only the posterior third of the body is used for propulsion, with the notable presence of a high-aspect-ratio caudal fin (Lindsey Reference Lindsey, Hoar and Randall 1978 ; Sfakiotakis, Lane & Davies Reference Sfakiotakis, Lane and Davies 1999 ).

Why is undulation important?

3.) More Efficient Kick – Essentially without undulating, swimmers entire stroke will fall apart. If you don’t undulate, your legs will be more towards the surface during the stroke – which as we’ve discussed in, if you move air – you don’t go anywhere. We want swimmers to move water.

Which animal moves undulation?

The snake has overcome the handicap of absence of limbs by developing several different methods of locomotion, some of which are seen in other limbless animals, others being unique. The first method, called serpentine locomotion, is shared with almost all legless animals, such as some lizards, the caecilians, earthworms, and others.

This is the way most snakes move and has been seen by any zoo visitor.
The body assumes a series of S-shaped horizontal loops, and each loop pushes against any resistance it can find in the environment, such as rocks, branches, twigs, dust, sand, or pebbles.
The environment almost always provides sufficient resistance to make movement possible, and many snake species never use any other method of locomotion.

Such species, when placed on a surface providing no resistance, such as smooth glass, are unable to move, whipping and thrashing around without progress. Snakes, like fishes and eels, swim by lateral undulation, which is essentially identical to serpentine locomotion.

The sea snakes, however, possess a distinct anatomy in the form of a flattened, oarlike tail. Other methods of terrestrial movement also involve at least some resistance by the environment but usually less than the first. One of these is known as “concertina” locomotion, because the snake in action resembles the opening and closing of an accordion or a concertina.

First the tail and the posteriormost part of the body are securely anchored, and then the head and the rest of the body are extended as far forward as possible from that secure base. At the maximum extension, the head and the forepart of the body are anchored and the posterior part drawn up as close as possible in the accordion-like folds.

A second cycle follows the first, and the snake progresses. Tree snakes, such as Imantodes and Oxybelis, modify this technique to move from branch to branch and have a strongly compressed body that permits surprising lengths of it to be stiffened and extended, using a modified I-beam effect for rigidity.

The third method is called “caterpillar” or “rectilinear” locomotion, because the body moves in a straight line, using a flow of muscle contractions along the sides that looks like a caterpillar in motion. The body musculature is used for sequential lifting, anchoring, and pushing against individual ventral scales, which results in an inching along.

It is used by large heavy-bodied snakes, such as the boas and some of the vipers. The fourth method is the least dependent on friction with the surface and is called sidewinding, This mode characterizes snakes living in the desert (though some non-desert dwellers also use it), where the sand simply gives way under any kind of push.

The sidewinder does not progress forward when in motion but actually goes sideways. The snake, lying extended on the sand, lifts the anterior part of the body, moves it several centimetres to the side, and rests that part on the sand, maintaining the rest of the body as a lifted loop.

This loop is then progressively shifted along the body to the end of the tail, at which time the entire snake has moved to the side from its previous position.
By the time the first loop has reached the end of the tail, a new loop has already lifted the head and started down the body, and the snake looks like a coiled spring rolling across the sand.

There is no rolling involved, however, since the ventral surface is always in contact with a substrate and usually leaves its impression behind in the sand, like a footprint. Sidewinding allows minimal contact of the body with hot sand and thereby allows the snake to be active at a time when surface travel would be lethal.

What part of speech is undulation?

Top Definitions Quiz Related Content Examples British

This shows grade level based on the word’s complexity. / verb ˈʌn dʒəˌleɪt, ˈʌn dyə-, -də-; adjective ˈʌn dʒə lɪt, -ˌleɪt, ˈʌn dyə-, -də- / This shows grade level based on the word’s complexity. verb (used without object), un·du·lat·ed, un·du·lat·ing. to move with a sinuous or wavelike motion; display a smooth rising-and-falling or side-to-side alternation of movement: The flag undulates in the breeze.

To have a wavy form or surface; bend with successive curves in alternate directions.
Of a sound) to rise and fall in pitch: the wail of a siren undulating in the distance.
Verb (used with object), un·du·lat·ed, un·du·lat·ing.
To cause to move in waves.
To give a wavy form to.
Adjective Also un·du·lat·ed,

having a wavelike or rippled form, surface, edge, etc.; wavy,

What part of speech is undulate?

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Advanced Dictionary

pronunciation: uhn dy leIt uhn j leIt parts of speech: intransitive verb, transitive verb, adjective features: Word Combinations ( verb )

part of speech:	intransitive verb
inflections:	undulates, undulating, undulated
definition 1:	to move in waves or a wavelike motion. The wheat undulated in the wind. similar words: fluctuate, roll, ruffle
definition 2:	to have a wavelike form or pattern.
definition 3:	to rise and fall like waves, as sound. similar words: fluctuate
related words:	billow, vacillate, wave, waver


part of speech:	transitive verb
definition 1:	to cause a wavelike motion in or of. similar words: fluctuate, roll, ruffle
definition 2:	to give a wavelike form or appearance to; ripple. similar words: ruffle
Word Combinations Subscriber feature About this feature

part of speech:	adjective
definition:	wavy in form or appearance, as the edges of certain leaves.
derivation:	undulated (adj.)

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What part of speech is undulating?

Adjective. /ˈʌndʒəleɪtɪŋ/ /ˈʌndʒəleɪtɪŋ/ having a shape like a wave or moving up and down like a wave.

What does gently undulating mean?

Verb. Something that undulates has gentle curves or slopes, or moves gently and slowly up and down or from side to side in an attractive manner.

What is difference between undulation and oscillation?

Very small fish, with lengths of a millimetre or so, also live in this world. However, for somewhat larger fish, say of length 10 mm, swimming at one body length per second, the Reynolds number will exceed 100, and reciprocal motions become the dominant form of propulsion. For such organisms, we can identify four major types of swimmers: undulatory, oscillatory, pulsatile and drag-based, as illustrated in figure 1,

Animals that periodically ingest a volume of water and then discharge it impulsively to produce thrust by reaction are called pulsatile swimmers, and examples include jellyfish, squid, frogfish and some molluscs (Fish Reference Fish 1987 ; Dabiri Reference Dabiri 2009 ).
Finally, drag-based swimmers such as humans, turtles, seals and ducks propel a bluff body such as a rigid flipper through the water to generate thrust (Fish Reference Fish 1996 ).

What is the point of the Screwtape Letters?

The Screwtape Letters

First edition dust wrapper
Author	C.S. Lewis
Country	United Kingdom
Language	English
Genre	Epistolary novel, Christian apologetics, satire
Publisher	Geoffrey Bles
Publication date	1942 1961 (first omnibus)
Media type	Print ( hardcover and paperback )
Pages	160 (1st) 157 (1st omnibus)
LC Class	BR125
Followed by	“Screwtape Proposes a Toast”

The Screwtape Letters is a Christian apologetic novel by C.S. Lewis and dedicated to J.R.R. Tolkien, It is written in a satirical, epistolary style and while it is fictional in format, the plot and characters are used to address Christian theological issues, primarily those to do with temptation and resistance to it.

What is a synonym for undulation?

An undulating sea of grass When is fluctuate a more appropriate choice than undulate ? While in some cases nearly identical to undulate, fluctuate suggests constant irregular changes of level, intensity, or value.
Fluctuating interest rates Where would oscillate be a reasonable alternative to undulate ? The words oscillate and undulate can be used in similar contexts, but oscillate stresses a usually regular alternation of direction.

The door suddenly swung open When would vibrate be a good substitute for undulate ? The meanings of vibrate and undulate largely overlap; however, vibrate suggests the rapid oscillation of an elastic body under stress or impact. the vibrating strings of a piano When is it sensible to use waver instead of undulate ? In some situations, the words waver and undulate are roughly equivalent.

However, waver stresses irregular motion suggestive of reeling or tottering. the exhausted runner wavered before collapsing