Imperceptible

The gradual change in the color of the leaves was imperceptible at first, but soon became obvious.

The change in the tone of the actor's voice was so imperceptible that the audience didn't notice it.

The radiation levels were imperceptible to the Geiger counter.

The movement of the plate was imperceptible to the seismograph.

The change in temperature was imperceptible, but it affected the reaction.

The movement of the clock's second hand was imperceptible without close observation.

The room had an imperceptible draft that made the curtains flutter ever so slightly.

The difference in color was so imperceptible that it was difficult to tell the two apart.

The change in the company's logo was so imperceptible that nobody realized it had been updated.

The amount of light was imperceptible to the light meter.

The shift in the company's focus was imperceptible to the public, but had a significant impact on the industry.

His hair was thinning, but the difference was imperceptible.

The concept of time dilation in physics is imperceptible to most people.

The subtle shift in texture was imperceptible to the fingers.

The movement of the fish was imperceptible to the angler.

The difference between the two shades of blue was imperceptible to the naked eye.

The difference in size between the two rooms was so imperceptible that it didn't matter which one they chose.

The spy's movements were imperceptible, making him difficult to detect.

The slight change in his speech pattern was imperceptible to most people, but not to his close friends.

The sound was so imperceptible that I couldn't tell if it was on or off.

The faint, imperceptible sound was actually the fluttering of butterfly wings.

The difference between the two images is almost imperceptible.

The shift in the stock market was so subtle that it was imperceptible to most investors.

The subtle nuances of his argument were imperceptible to most listeners.

The complexity of the subject made the meaning of the article almost imperceptible to me.

His disappointment was only imperceptible because he didn't want to let anyone know how upset he was.

The shift in perspective was so imperceptible that I didn't realize how much I had changed until much later.

The small, imperceptible movements of her fingers revealed her nervousness.

His humor was so dry and understated that sometimes his jokes were almost imperceptible.

The imperceptible differences between the two paintings made it difficult to choose a favorite.

The colors in the painting are so subtle that the differences are imperceptible to the naked eye.

The changes in the cell structure were so imperceptible that they were only discovered with the use of electron microscopy.

The difference in weight between the two samples was so imperceptible that a highly sensitive scale was needed to measure it.

The aroma of the flower was imperceptible to the nose.

The sound of the clock ticking was almost imperceptible.

The scent of the flowers was imperceptible from a distance.

The small, imperceptible movements of the athlete gave him an advantage in the race.

The subtle change in the CEO's tone was imperceptible to most of the employees.

The text on the page was so small that it was almost imperceptible.

The doctor noticed an imperceptible change in the patient's vital signs that signaled a potential problem.

The difference in the two shades of blue was almost imperceptible.

The feeling of the fabric against his skin was so imperceptible that he couldn't tell if he was wearing anything.

The mouse made an imperceptible movement before scurrying away.

The song had an imperceptible shift in tempo that only the trained musician noticed.

The new cologne had an imperceptible hint of vanilla that made it unique.

She whispered so quietly that her words were imperceptible to those in the back of the room.

The cloud cover was so thin that the stars were almost imperceptible.

The actor's delivery of the line had an imperceptible hint of sarcasm that made the audience chuckle.

The weather forecast predicted an imperceptible drop in temperature for the coming days.

The ticking of the clock was almost imperceptible in the quiet room.